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LM270WQ1
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
(●●●●) Final Specification
BUYER
www.jxlcd.com
www.jxlcd.com
APPROVED BY
/
/
APPLE
K23MODEL
SIGNATURE
DATE
27.0” QHD TFT LCDTitle
LG Display Co., Ltd.SUPPLIER
LM270WQ1*MODEL
SDA2SUFFIX
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
J H Park / G.Manager
REVIEWED BY
S J So / Manager
SIGNATURE
DATE
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0 SEP. 16. 2009
PREPARED BY
S R Yoo / Engineer
MNT Products Engineering Dept.
LG Display Co., Ltd.
1 / 37
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LM270WQ1
Liquid Crystal Display
Product Specification
Contents
ITEMNo
COVER
CONTENTS
RECORD OF REVISIONS
GENERAL DESCRIPTION1
ABSOLUTE MAXIMUM RATINGS2
ELECTRICAL SPECIFICATIONS3
ELECTRICAL CHARACTREISTICS3-1
INTERFACE CONNECTIONS3-2
SIGNAL TIMING SPECIFICATIONS3-3
SIGNAL TIMING WAVEFORMS3-4
COLOR INPUT DATA REFERNECE3-5
POWER SEQUENCE3-6
OPTICAL SFECIFICATIONS4
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MECHANICAL CHARACTERISTICS5
Page
1
2
4
6
8
9
9
11
13
14
15
16
19
25
RELIABLITY6
INTERNATIONAL STANDARDS7
SAFETY7-1
EMC7-2
PACKING8
DESIGNATION OF LOT MARK8-1
PACKING FORM8-2
PRECAUTIONS9
MOUNTING PRECAUTIONS9-1
OPERATING PRECAUTIONS9-2
ELECTROSTATIC DISCHARGE CONTROL9-3
PRECAUTIONS FOR STRONG LIGHT EXPOSURE9-4
STORAGE9-5
HANDLING PRECAUTIONS FOR PROTECTION FILM9-6
Ver. 1.0 SEP. 16. 2009
28
29
29
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30
30
30
31
31
31
32
32
32
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LM270WQ1
Liquid Crystal Display
Product Specification
Contents
ITEMNo
EDID DATA10
EDID DATA10-1
EDID READ/WRITE PROTOCOL10-2
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33
33
35
Ver. 1.0 SEP. 16. 2009
3 / 37
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LM270WQ1
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision
No
DescriptionPageRevision Date
First Draft(Preliminary)-Dec. 9. 20080.0
Pin symbol name is changed11Jan. 15. 20090.1
Timing data of EDID is corrected34Jan. 22. 20090.2
Check sum value is changed from BO to F535
Update diagonal size (60.96 68.47)5Feb. 7. 20090.3
Update pixel pitch (0.270x0.270 0.2331x0.2331)5
Update pin configuration of 30pin CNT11
Change 30pin CNT (Hirose I-PEX)11
Update timing table13
Check sum value is changed from F5 to 3935
Update outline dimension5Feb. 25. 20090.4
Add LED Bar Electrical Characteristics9
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Update Backlight Interface11
Update Response time18
Add typo (= will be updated)25~26
Update LED Connector & Mating Connector11Feb. 27. 20090.5
Update Outline Dimension24
Update a mechanic drawing25~26
Update EDID data32~34
Change SUFFIX1Apr. 15. 20090.6
Update General Features5
Update Electrical Characteristics7
Update LED Bar Electrical Characteristics9
Update Timing Table12
Update Mechanical Characteristics25~26
Update Packing Form29
Update EDID data32~35
Update Power Consumption6May. 27. 20090.7
Ver. 1.0 SEP. 16. 2009
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LM270WQ1
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision
No
DescriptionPageRevision Date
Update LED Bar Electrical Characteristics10
Change 30pin CNT (I-PEX JAE)11
Update pin configuration of 30pin CNT
Update Timing Table13
Update Power Sequence16~17
Update Optical Characteristics20
Update Mechanical Characteristics26
Update a mechanic drawing27~28
Update EDID data34~37
Update Electrical Characteristics8Jul. 20. 20090.8
Update LED CNT pin configuration12
Update a mechanic drawing28
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Update EDID data34~37
Update LED Bar Electrical Characteristics10Aug. 14. 2009
Update Electrical Characteristics8~9Aug. 31. 20091.0
Update a mechanic drawing28Sep. 16. 2009
Ver. 1.0 SEP. 16. 2009
5 / 37
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LM270WQ1
Liquid Crystal Display
Product Specification
1. General Description
LM270WQHD 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 black mode. It has a 27inch diagonally measured
ac t iv e di s pl a y a r ea wi t h QHD re so lu t io n (2 56 0 hor iz o nt al b y 14 4 0 ve rti cal pixe l ar ray )
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(True) colors.
It has been designed to apply the 8Bit 4Lane Display port interface.
It i s i n t en de d t o s up po rt di sp la ys wh er e h ig h b ri gh tn es s , s u p e r w id e v ie wi ng an gl e,
high color saturation, and high color are important.
Main Link
4 Lane
AUX CH
DP function
Logic Power
3.3V
LCD Power
12 V
HPD
CN1
(30pin)
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General Features
Flash
memory
SPI
Timing
Controller
Logic Power
3.3V / 1.2V
EEPR
OM
I2C
Power
Circuit
Block
27.0 inches(68.47cm) diagonalActive Screen Size
630.0(H) x 376.13(V) x 21.8(D) mm(Typ.)Outline Dimension
0.2331 mm x 0.2331 mmPixel Pitch
2560 horiz. By 1440 vert. Pixels RGB stripes arrangementPixel Format
8-bit, 16,777,216 colorsColor Depth
380 cd/m
Power
Enable
(Video On)
Vled
2
( 5 points Avg.)Luminance, White
Mini-LVDS (RGB)
Source Driver Circuit
S1 S2560
TFT - LCD Panel
(2560 × RGB × 1440 pixels)
B/L System (White LED)
View Angle Free (R/L 178(Typ.), U/D 178(Typ.))Viewing Angle(CR>10)
Power Consumption
Ver. 1.0 SEP. 16. 2009
Total 96.91 Watt (Max.)
(15.36 Watt @VLCD, Max 81.55 Watt_Duty 100% of DC 350 mA_w/o driver)
4600 g (typ.)Weight
Transmissive mode, normally blackDisplay Operating Mode
Glare (Low Reflection treatment of the front polarizer)Surface Treatment
HDCP key implemented in Tcon (DP628)HDCP
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LM270WQ1
Liquid Crystal Display
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
Parameter Notes
Power Input Voltage
Power Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity
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.
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Wet Bulb
Temperature [C]
10
0
Symbol
50
40
30
20
Values
MaxMin
90%
60
60%
40%
Humidity [(%)RH]
10%
Units
Vdc14-0.3VLCD
Vdc4-0.5VDPLOGIC
°C500TOP
°C60-20TST
%RH9010HOP
%RH9010HST
at 25 ± 2°C
at 25 ± 2°C
1
Storage
Operation
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [C]
Ver. 1.0 SEP. 16. 2009
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LM270WQ1
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 DP Rx.
Table 2-1-1. ELECTRICAL CHARACTERISTICS (Normal Mode)
Values
SymbolParameter
MaxTypMin
NotesUnit
MODULE :
Vdc12.612.011.4VLCDPower Supply Input voltage
mVp-p400-VdRFPermissive Power Input Ripple
ILCDPower Supply Input Current
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PLCDPower Consumption
I_DPLOGICDP Logic Input Current
1025890-
14751280-
12.3010.68-
17.7015.36
Vdc3.473.33.13VCC_DPLOGICDP Logic Input Voltage
Watt1.0P_DPLOGICDP Logic Power Consumption
1mA
2mA
1Watt
2Watt
3A3.0--IRUSH_VLCDRush Current
1mA300
2mA300
3A1.0--IRUSH_DPLOGICDP Rush Current
Ver. 1.0 SEP. 16. 2009
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Liquid Crystal Display
Product Specification
Note :
1. The specified current and power consumption are under the V
whereas mosaic pattern(8 x 6) is displayed and fVis 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
=12.0V, 25 ± 2°C,fV=60Hz condition
LCD
Maximum current pattern
LM270WQ1
Mosaic Pattern(8 x 6)
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White Pattern
Ver. 1.0 SEP. 16. 2009
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LM270WQ1
Liquid Crystal Display
Product Specification
Table 2-2. LED Bar ELECTRICAL CHARACTERISTICS
LED String Power
LED Bar Power
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.
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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.
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ConditionSymbolParameter
Values
Max.Typ.Min.
150--TjLED Junction Temperature
Unit
℃
Notes
1,7LED :
2,7mA700350-IsLED String Current
3,7V4137.835VsLED String Voltage
3,7V233226.8-VBarLED Bar Voltage
4,6,7Watt14.3513.2312.25Ps
4,6,7Watt81.5579.38-PBar
5,7Hrs--(39,000)LED_LTLED Life Time
7
1. Specified values are for a single LED bar including Left & Right 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 350 mA 100% duty current.
4. The specified power consumption is input LED string & bar power consumption at typical 350 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 ± 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.
String Power Consumption is calculated with PS = VS x Is
Bar Power Consumption is calculated with PL = VBarx Is
7. LED operating DC Forward Current and Junction Temperature must not exceed LED Max Ratings.
Ver. 1.0 SEP. 16. 2009
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LM270WQ1
Liquid Crystal Display
Product Specification
3-2. Interface Connections
3-2-1. LCD Module
- LCD Connector(CN1). : FI-X30SSL-HF (manufactured by JAE)
The pin configuration for the 30 pin connector is shown in the table below.
Table 3 MODULE CONNECTOR(CN_SIG) PIN CONFIGURATION
DescriptionSymbolPin No.
DDC_SCL1
GND3
AUX_CH N4
GND6
Lane0P7
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Lane0N8
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GND9
GND12
DDC for Clock
DDC for DataDDC_SDA2
High Speed Ground for Auxiliary
Channel
Component Signal for Auxiliary
Channel
True Signal for Auxiliary ChannelAUX_CH P5
High Speed Ground for Main
Link 0
True Signal for Main Link 0
Component Signal for Main Link 0
High Speed Ground for Main
Link 1
True Signal for Main Link 1Lane1P10
Component Signal for Main Link 1Lane1N11
High Speed Ground for Main
Link 2
Pin No.
16
17
18
19
20
21
22
23
24
25
26
27
Symbol
Lane3P
Lane3N
GND
VIDEO_
ON
HPD
GND
GND
GND
GND
VLCD
VLCD
True Signal for Main Link 3
Component Signal for Main Link 3
High Speed Ground
Audio output from DP RXSPDIF
Video status from DP RX
Hot Plug Detect Signal
GND for main power
GND for main power
GND for main power
GND for main power
12V for LCM main power
12V for LCM main power
Description
True Signal for Main Link 2Lane2P13
Component Signal for Main Link 2Lane2N14
GND15
Notes : 1. Connector
2.1 Connector(Receptacle) : FI-X30SSL-HF(JAE) or 20389-Y30E-01(I-PEX)
2.2 Mating Connector(Plug) : FI-X30HL(JAE) or 20385-Y30T-12F(I-PEX)
Ver. 1.0 SEP. 16. 2009
High Speed Ground for Main
Link 3
28
29
30
VLCD
VLCD
VCC_L_IN
12V for LCM main power
12V for LCM main power
3.3V for DP TCON power
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LM270WQ1
Liquid Crystal Display
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)
Table 5. LED CONNECTOR PIN CONFIGULATION
Symbol
LED channel 1 AnodeL_LED1+1
LED channel 1 CathodeL_LED1-2
LED channel 2 AnodeL_LED2+3
LED channel 2 CathodeL_LED2-4
LED channel 3 AnodeL_LED3+5
LED channel 3 CathodeL_LED3-6
R_LED1+
R_LED1-
R_LED2+
R_LED2-
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R_LED3+
R_LED3-
LED channel 1 Anode7
LED channel 1 Cathode8
LED channel 2 Anode9
LED channel 2 Cathode10
LED channel 3 Anode11
LED channel 3 Cathode12
NoteDescriptionPin No.
Left bar
Right bar
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LM270WQ1
Liquid Crystal Display
Product Specification
3-3. Signal Timing Specifications
All of the interface signal timing should be satisfied with the following specifications for it’s proper operation.
Table 6. TIMING TABLE (VESA COORDINATED VIDEO TIMING)
DCLK
Hsync
Vsync
Data
Enable
SYMBOL
ns4.144.144.14tCLKPeriod
272027202720tHPPeriod
tCLK
323232tWHWidth-Active
tHP148114811481tVPPeriod
Hz59.9559.9559.95fVFrequency
555tWVWidth-Active
256025602560tHVHorizontal Valid
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808080tHBPHorizontal Back Porch
484848tHFPHorizontal Front Porch
144014401440tVVVertical Valid
tHP
tCLK
NoteUnitMaxTypMinITEM
-MHz241.5241.5241.5fCLKFrequency
tWH+ tHBP+ tHFP160160160-Horizontal Blank
333333tVBPVertical Back Porch
tHP
333tVFPVertical Front Porch
tWV+ tVBP+ tVFP414141-Vertical Blank
Note: Hsync period and Hsync width-active should be even number times of tCLK. If the value is odd number
times of tCLK, display control signal can be asynchronous. In order to operate this LCM a Hsync,
Vsync, and DE(data enable) signals should be used.
1. The performance of the electro-optical characteristics may be influenced by variance of the vertical
refresh rates.
2. Vsync and Hsync should be keep the above specification.
3. Hsync Period, Hsync Width, and Horizontal Back Porch should be any times of of character
number(8).
4. The polarity of Hsync, Vsync is not restricted.
Ver. 1.0 SEP. 16. 2009
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LM270WQ1
Liquid Crystal Display
Product Specification
3-4. Signal Timing Waveforms
Hsync, Vsync, DE, DATA
t
CLK
Dclk
INVALID
DATA
DE(Data Enable)
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Hsync
t
WH
0.5VDD
0.7VDD
0.3VDD
VALID
Data are latched at the falling edge of DCLK
t
HP
INVALID
t
HBP
DE(Data Enable)
t
VP
t
WV
Vsync
t
VBP
DE(Data Enable)
Ver. 1.0 SEP. 16. 2009
t
HV
t
VV
t
t
HFP
VFP
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LM270WQ1
Liquid Crystal Display
Product Specification
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 the binary input, the brighter the color. The table below provides a reference for color versus data
input.
Table 7. COLOR DATA REFERENCE
Input Color Data
Basic
Color
RED
Color
Black 0 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0
Red (255)
Green (255)
Blue (255)
Cyan
Magenta
Yellow
White
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MSB LSB
RED
MSB LSB
GREEN
MSB LSB
B7 B6 B5 B4 B3 B 2 B1 B0G7 G6 G5 G4 G3 G2 G1 G0R7 R6 R5 R4 R3 R2 R1 R0
0 0 0 0 0 0 0 00 0 0 0 0 0 0 01 1 1 1 1 1 1 1
0 0 0 0 0 0 0 01 1 1 1 1 1 1 10 0 0 0 0 0 0 0
1 1 1 1 1 1 1 10 0 0 0 0 0 0 00 0 0 0 0 0 0 0
1 1 1 1 1 1 1 11 1 1 1 1 1 1 10 0 0 0 0 0 0 0
1 1 1 1 1 1 1 10 0 0 0 0 0 0 01 1 1 1 1 1 1 1
0 0 0 0 0 0 0 01 1 1 1 1 1 1 11 1 1 1 1 1 1 1
1 1 1 1 1 1 1 11 1 1 1 1 1 1 11 1 1 1 1 1 1 1
0 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0RED (000) Dark
0 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 1RED (001)
0 0 0 0 0 0 0 00 0 0 0 0 0 0 01 1 1 1 1 1 1 0RED (254)
0 0 0 0 0 0 0 00 0 0 0 0 0 0 01 1 1 1 1 1 1 1RED (255)
0 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0GREEN (000) Dark
BLUE
............
GREEN
BLUE (000) Dark
BLUE
Ver. 1.0 SEP. 16. 2009
0 0 0 0 0 0 0 00 0 0 0 0 0 0 10 0 0 0 0 0 0 0GREEN (001)
............
0 0 0 0 0 0 0 01 1 1 1 1 1 1 00 0 0 0 0 0 0 0GREEN (254)
0 0 0 0 0 0 0 01 1 1 1 1 1 1 10 0 0 0 0 0 0 0GREEN (255)
0 0 0 0 0 0 0 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0
0 0 0 0 0 0 0 10 0 0 0 0 0 0 00 0 0 0 0 0 0 0BLUE (001)
............
1 1 1 1 1 1 1 00 0 0 0 0 0 0 00 0 0 0 0 0 0 0BLUE (254)
1 1 1 1 1 1 1 10 0 0 0 0 0 0 00 0 0 0 0 0 0 0BLUE (255)
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LM270WQ1
Liquid Crystal Display
Product Specification
3-6. Power Sequence
3-6-1. Power Sequence
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Notes : [1] HPD is asserted high by Sink at power-up
[2] SYMBOL_LOCK indicated by contents of Sink DPCD registers 00202h to 00205h
[3] VIDEO_ON asserted high by Sink when video to panel is valid
Notes : 1. Please avoid floating state of interface signal at invalid period.
2. When the interface signal is invalid, be sure to pull down the power supply for LCD V
3. LED power must be turn on after power supply for LCD and interface signal are valid.
LCD
to 0V.
Ver. 1.0 SEP. 16. 2009
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LM270WQ1
Liquid Crystal Display
Product Specification
3-6. Power Sequence
3-6-1. Power Sequence
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Notes : [2] SYMBOL_LOCK indicated by contents of Sink DPCD registers 00202h to 00205h
[4] Power-state set by Source in Sink DPCD register 00600h
[5] VIDEO_ON asserted low by Sink because of :
1) loss of SYMBOL_LOCK or
2) DP Sink is powered down
[6] BL_ON must be asserted low by system as rapidly as possible when video is invalid
to avoid visible artifacts
[7] T17 always > T19
[8] min. times of 0 indicate precedence ordering of events, e.g. where actual timing is TBD
Ver. 1.0 SEP. 16. 2009
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LM270WQ1
Liquid Crystal Display
Product Specification
3-6-2. Power Sequence, EDID Read / Write
*** This timing is for fabrication purpose only, not for normal operation. ***
DP Logic Power(3.3V)
HPD
EDID Read*
ADDR : A1
Write protection
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EDID Write*
ADDR : A0
VDP
0V
10
%
TE1
90
%
TE2
TE3
TE4
TE6
TE5
TE7
90
%
10
%
TE8
* EDID Read time and EDID write time will be exclusive.
Notes.
In case of without DP signal after DP logic power on, check HPD after TE1 time
and if HPD is low status then any time can read EDID
Table 8.1 POWER SEQUENCE, EDID
Parameter
Ver. 1.0 SEP. 16. 2009
Values
MaxTypMin
Units
ms5030-TE1
ms--1000TE2
ms20-TE3
ms--1TE4
ms2000--TE5
ms--1TE6
ms-20-TE7
ms--1TE8
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LM270WQ1
Liquid Crystal Display
Product Specification
3-6-3. State Machine
OFF MODE
NEGATIVE
DC STATE
(OR CABLE
UNPLUG)
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SOURCE
WRITES
02
SLEEP MODE
DP AUX
CHANNEL
NEGATIVE
LINE
DPCD
0x600
VALUE
POSITIVE
DC STATE
SOURCE
WRITES
01
ON MODE
Ver. 1.0 SEP. 16. 2009
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LM270WQ1
Liquid Crystal Display
Product Specification
4. Optical Specifications
Optical characteristics are determined after the unit has been ‘ON’ for approximately 120 minutes
in a dark environment at 25±2°C. The values specified are at an approximate distance 50cm from the LCD
surface at a viewing angle of Φ and θ equal to 0 ° and aperture 1 degree.
FIG. 1 presents additional information concerning the measurement equipment and method.
Pritchard 880 or
equivalent
Optical Stage(x,y)
LCD Module
50cm
FIG. 1 Optical Characteristic Measurement Equipment and Method
Table 9. OPTICAL CHARACTERISTICS
SymbolParameter
Surface Luminance, white
Luminance Variation
Response Time
Color Coordinates
[CIE1931]
Color Shift
Viewing Angle (CR>10)
General
Effective 7Degree
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Horizontal
Vertical
Horizontal
Vertical
Rise Time
Decay Time
RED
GREEN
BLUE
WHITE
Horizontal
Vertical
δ
θ
θ
θ
θ
WH
WHITE
R
D
Rx
CST_H
CST_V
θ
H
θ
V
GMA_H
GMA_V
-0.03
Typ
(Ta=25 °C, V
Values
0.652
0.334Ry
0.304Gx
0.619Gy
0.148Bx
0.049By
0.313Wx
0.329Wy
=12.0V, fV=60Hz Dclk=242.28MHz)
LCD
MaxTypMin
-1000700CRContrast Ratio
-380300L
Typ
+0.03
-178-
-178-
-178170
-178170
-178
-178
NotesUnits
1
2
2cd/m
3%30
4.1ms146.5-Tr
4.1ms147.5-Tr
5Degree
6Degree
82.2Gray Scale
Ver. 1.0 SEP. 16. 2009
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Product Specification
Notes 1. Contrast Ratio(CR) is defined mathematically as :
RatioContrast =
It is measured at center point(Location P1)
2. Surface luminance(LWH)is luminance value at 5 points average across the LCD surface 50cm from
the surface with all pixels displaying white. For more information see FIG 2.
L
= = Average[ Lon1,Lon2,Lon3,Lon4,Lon5]
WH
3. The variation in surface luminance , δ WHITE is defined as :
WHITE
=
δ
LM270WQ1
Liquid Crystal Display
pixels white all with Luminance Surface
pixels black all with Luminance Surface
……
)L .... ,L ,(L Average
on5on2on1
)L .. ,L,Minimum(L- )L .. ,L,Maximum(L
on13on2on1on13on2on1
(%)100
×
Where L1 to L13 are the luminance with all pixels displaying white at 13 locations.
For more information see FIG 2.
4. Response time is the time required for the display to transition from black to white (Rise Time,
TrR) and from white to black (Decay Time, TrD). For additional information see FIG 3
5. Color shift is the angle at which the color difference is lower than 0.04.
For more information see FIG 4.
- Color difference (Δu’v’)
4
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'
=
u
- Pattern size : 25% Box size
- Viewing angle direction of color shift : Horizontal, Vertical
6. Viewing angle is the angle at which the contrast ratio is greater than 10. The angles are
determined for the horizontal or x axis and the vertical or y axis with respect to the z axis which
is normal to the LCD surface. For more information see FIG 5.
7. Effective viewing angle is the angle at which the gamma shift of gray scale is lower than 0.3.
For more information see FIG 6 and FIG 7.
x
'
=
3122
++−
yx
21
v
2
9
y
3122
++−
yx
2
)''()''('' vvuuvu −+−=∆
21
u’1, v’1 : u’v’ value at viewing angle direction
u’2, v’2 : u’v’ value at front (θ=0)
8. Gray scale specification
Gamma Value is approximately 2.2. For more information see Table 10.
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LM270WQ1
Liquid Crystal Display
Product Specification
Measuring point for surface luminance & measuring point for luminance variation.
H
A
H/16
6 7
B
V
V/10
A : H/4 mm
B : V/4 mm
@ H,V : Active Area
The response time is defined as the following figure and shall be measured by switching the input signal for
“black” and “white”.
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100
90
9
11 12
FIG. 2 Measure Point for Luminance
2
1
4
TrR
3
5
Active Area
8
10
13
TrD
Optical
Response
10
0
black
FIG. 3. Response Time
Ver. 1.0 SEP. 16. 2009
white
black
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LM270WQ1
Liquid Crystal Display
Product Specification
Color shift is defined as the following test pattern and color.
25% Box size
FIG. 4 Test Pattern
Average RGB values in Bruce RGB for Macbeth Chart
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Bluish greenBlue flowerFoliageBlue skyLight skinDark skin
114129778520698R
19911810211214256G
1781854616112345B
Orange yellowYellow greenPurpleModerate redPurplish blueOrange
2301607621156219R
162193396769104G
2958868717424B
cyanMagentaYellowRedGreenBlue
352072411977226R
126622122714832G
172151363765145B
blackNeutral 3.5Neutral 5Neutral 6.5Neutral 8White
2263110155206240R
2263110155206240G
2263110155206240B
Ver. 1.0 SEP. 16. 2009
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LM270WQ1
Liquid Crystal Display
Product Specification
Dimension of viewing angle range.
Normal
φ
= 180°, Left
φ
= 270°, Down
FIG. 5 Viewing angle
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θ
E
φ
Y
φ
= 90°, Up
φ
= 0°, Right
FIG. 6 Sample Luminance vs. gray scale
(using a 256 bit gray scale)
r
LaVL +=
b
Here the Parameter α and γ relate the signal level V to the luminance L.
The GAMMA we calculate from the log-log representation (FIG. 7)
Ver. 1.0 SEP. 16. 2009
FIG. 7 Sample Log-log plot of luminance
vs. gray scale
b
+=−
)log()log()log( aVrLL
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LM270WQ1
Liquid Crystal Display
Product Specification
Table 10. Gray Scale Specification
Relative Luminance [%] (Typ.)Gray Level
0.100
31
63
95
127
159
191
223
255
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1.08
4.71
11.5
21.7
35.5
53.1
74.5
100
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LM270WQ1
Liquid Crystal Display
Product Specification
5. Mechanical Characteristics
The contents provide general mechanical characteristics. In addition the figures in the next page are detailed
mechanical drawing of the LCD.
630.0mmHorizontal
Outline Dimension
Bezel Area
Active Display Area
4,600g (Typ.)Weight
Surface Treatment
Notes : Please refer to a mechanic drawing in terms of tolerance at the next page.
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Hard coating(2H)
Glare, Low Reflection treatment of the front polarizer
376.13mmVertical
21.8mmDepth
601.7mmHorizontal
340.7mmVertical
596.74mmHorizontal
335.66mmVertical
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LM270WQ1
Liquid Crystal Display
Product Specification
<FRONT VIEW>
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LM270WQ1
Liquid Crystal Display
Product Specification
<REAR VIEW>
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LM270WQ1
Liquid Crystal Display
Product Specification
6. Reliability
Environment test condition
ConditionTest ItemNo
Ta= 60°C 240hHigh temperature storage test1
Ta= -20°C 240hLow temperature storage test2
Ta= 50°C 50%RH 240hHigh temperature operation test3
Ta= 0°C 240hLow temperature operation test4
Wave form : random
5
6
7
Vibration test
(non-operating)
Shock test
(non-operating)
Altitude
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Operating
Storage / Shipment
Vibration level : 1.0G RMS
Bandwidth : 10-300Hz
Duration : X,Y,Z, 10 min
One time each direction
Shock level : 100Grms
Waveform : half sine wave, 2ms
Direction : ±X, ±Y, ±Z
One time each direction
0 - 10,000 feet(3,048m)
0 - 40,000 feet(12,192m)
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LM270WQ1
Liquid Crystal Display
Product Specification
7. International Standards
7-1. Safety
a) UL 60950-1:2003, First Edition, Underwriters Laboratories, Inc.,
Standard for Safety of Information Technology Equipment.
b) CAN/CSA C22.2, No. 60950-1-03 1st Ed. April 1, 2003, Canadian Standards Association,
Standard for Safety of Information Technology Equipment.
c) EN 60950-1:2001, First Edition,
European Committee for Electrotechnical Standardization(CENELEC)
European Standard for Safety of Information Technology Equipment.
d) IEC 60950-1:2001, First Edition, The International Electrotechnical Commission (IEC)
Standard for Safety of Information Technology Equipment.
(Including report of IEC60825-1 Ed. 1.22001, clause 8 and clause 9)
7-2. EMC
a) ANSI C63.4 “Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and
Electrical Equipment in the Range of 9kHZ to 40GHz. “American National Standards Institute(ANSI),
1992
b) C.I.S.P.R “Limits and Methods of Measurement of Radio Interface Characteristics of Information
Technology Equipment.“ International Special Committee on Radio Interference.
c) EN 55022 “Limits and Methods of Measurement of Radio Interface Characteristics of Information
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Technology Equipment.“ European Committee for Electrotechnical Standardization.(CENELEC), 1998
( Including A1: 2000 )
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LM270WQ1
Liquid Crystal Display
Product Specification
8. Packing
8-1. Designation of Lot Mark
a) Lot Mark
A B C D E F G H I J K L M
A,B,C : SIZE(INCH) D : YEAR
E : MONTH F ~ M : SERIAL NO.
Note
1. YEAR
Year
Mark
2. MONTH
Month
Mark
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b) Location of Lot Mark
Serial No. is printed on the label. The label is attached to the backside of the LCD module.
This is subject to change without prior notice.
8-2. Packing Form
a) Package quantity in one box : 7ea
b) Box Size : 747mm X 335mm X 466mm
2006720078200892009
6
Jun7Jul8Aug9Sep
6
321
200452005
4
Apr5May
4
200320022001
2010
0
Oct
A
Nov
B
DecMarFebJan
C321
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LM270WQ1
Liquid Crystal Display
Product Specification
9. PRECAUTIONS
Please pay attention to the followings when you use this TFT LCD module.
9-1. MOUNTING PRECAUTIONS
(1) You must mount a module using holes arranged in four corners or four sides.
(2) You should consider the mounting structure so that uneven force (ex. Twisted stress) is not applied to the
module. And the case on which a module is mounted should have sufficient strength so that external
force is not transmitted directly to the module.
(3) Please attach the surface transparent protective plate to the surface in order to protect the polarizer.
Transparent protective plate should have sufficient strength in order to the resist external force.
(4) You should adopt radiation structure to satisfy the temperature specification.
(5) Acetic acid type and chlorine type materials for the cover case are not desirable because the former
generates corrosive gas of attacking the polarizer at high temperature and the latter causes circuit break
by electro-chemical reaction.
(6) Do not touch, push or rub the exposed polarizers with glass, tweezers or anything harder than HB
pencil lead. And please do not rub with dust clothes with chemical treatment.
Do not touch the surface of polarizer for bare hand or greasy cloth.(Some cosmetics are detrimental
to the polarizer.)
(7) When the surface becomes dusty, please wipe gently with absorbent cotton or other soft materials like
chamois soaks with petroleum benzene. Normal-hexane is recommended for cleaning the adhesives
used to attach front / rear polarizers. Do not use acetone, toluene and alcohol because they cause
chemical damage to the polarizer.
(8) Wipe off saliva or water drops as soon as possible. Their long time contact with polarizer causes
deformations and color fading.
(9) Do not open the case because inside circuits do not have sufficient strength.
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9-2. OPERATING PRECAUTIONS
(1) The spike noise causes the miss-operation of circuits. It should be lower than following voltage :
V=±200mV(Over and under shoot voltage)
(2) Response time depends on the temperature.(In lower temperature, it becomes longer.)
(3) Brightness depends on the temperature. (In higher temperature, it becomes lower.)
And in lower temperature, response time(required time that brightness is stable after turned on) becomes
longer.
(4) Be careful for condensation at sudden temperature change. Condensation makes damage to polarizer or
electrical contacted parts. And after fading condensation, smear or spot will occur.
(5) When fixed patterns are displayed for a long time, remnant image is likely to occur.
(6) Module has high frequency circuits. Sufficient suppression to the electromagnetic interference shall be
done by system manufacturers. Grounding and shielding methods may be important to minimized the
interference.
(7) Please do not give any mechanical and/or acoustical impact to LCM. Otherwise, LCM can’t be operated
its full characteristics perfectly.
(8) A screw which is fastened up the steels should be a machine screw.
(if not, it causes metallic foreign material and deal LCM a fatal blow)
(9) Please do not set LCD on its edge.
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LM270WQ1
Liquid Crystal Display
Product Specification
9-3. ELECTROSTATIC DISCHARGE CONTROL
Since a module is composed of electronic circuits, it is not strong to electrostatic discharge. Make certain that
treatment persons are connected to ground through wrist band etc. And don’t touch interface pin directly.
9-4. PRECAUTIONS FOR STRONG LIGHT EXPOSURE
Strong light exposure causes degradation of polarizer and color filter.
9-5. STORAGE
When storing modules as spares for a long time, the following precautions are necessary.
(1) Store them in a dark place. Do not expose the module to sunlight or fluorescent light. Keep the temperature
between 5°C and 35°C at normal humidity.
(2) The polarizer surface should not come in contact with any other object.
It is recommended that they be stored in the container in which they were shipped.
9-6. HANDLING PRECAUTIONS FOR PROTECTION FILM
(1) The protection film is attached to the bezel with a small masking tape
When the protection film is peeled off, static electricity is generated between the film and polarizer.
This should be peeled off slowly and carefully by people who are electrically grounded and with well ionblown equipment or in such a condition, etc.
(2) When the module with protection film attached is stored for a long time, sometimes there remains a very
small amount of glue still on the bezel after the protection film is peeled off.
(3) You can remove the glue easily. When the glue remains on the bezel surface or its vestige is recognized,
please wipe them off with absorbent cotton waste or other soft material like chamois soaked with normalhexane.
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.
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LM270WQ1
Liquid Crystal Display
Product Specification
10. EDID DATA FOR LM240WU6-SDA1
10-1. EDID Data
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Liquid Crystal Display
Product Specification
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LM270WQ1
Liquid Crystal Display
Product Specification
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LM270WQ1
Liquid Crystal Display
Product Specification
10-2. EDID DATA READ/WRITE PROTOCOL
10-2-1. READ Operation
<Start><Slave Address, RW=0><Byte Address><Start><Slave Address, RW=1><Data><Stop>
10-2-2. WRITE Operation
<Start><Slave Address, RW=0><Byte Address><Data><Stop>
- Device Address (Slave Address)
- Byte Address
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HexDevice (Slave) Address Type
IS24C02B 0xA0 + RW
Byte Address
Decimal
0 ~ 127
0x00 ~ 0x7F Hex
RW
0000101
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