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LM270WQ1
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
() Preliminary Specification
( ) Final Specification
BUYER
MODEL
APPROVED BY
/
/
SIGNATURE
DATE
27.0” QHD TFT LCDTitle
LG Display Co., Ltd.SUPPLIER
LM270WQ1*MODEL
SLB1SUFFIX
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
S. Y. Park / G.Manager
REVIEWED BY
S. J. So / Manager
SIGNATURE
DATE
PREPARED BY
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 0.9 Mar. 15. 2012
S. R. Yoo / Engineer
MNT Products Engineering Dept.
LG Display Co., Ltd.
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LM270WQ1
Liquid Crystal Display
Product Specification
Contents
COVER
CONTENTS
RECORD OF REVISIONS
GENERAL DESCRIPTION1
ABSOLUTE MAXIMUM RATINGS2
ELECTRICAL SPECIFICATIONS3
ELECTRICAL CHARACTERISTICS3-1
INTERFACE CONNECTIONS3-2
LVDS CHARACTERISTICS3-3
SIGNAL TIMING SPECIFICATIONS3-4
SIGNAL TIMING WAVEFORMS3-5
COLOR INPUT DATA REFERNECE3-6
POWER SEQUENCE & DIP CONDITION FOR LCD MODULE3-7
POWER SEQUENCE & DIP CONDITION FOR LCD INVERTER3-8
OPTICAL SPECIFICATIONS4
MECHANICAL CHARACTERISTICS5
ITEMNo
Page
1
2
3
4
5
6
6
8
11
14
15
16
17
19
20
26
RELIABLITY6
INTERNATIONAL STANDARDS7
SAFETY7-1
EMC7-2
ENVIRONMENT7-3
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
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LM270WQ1
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision
No
Revision
Date
DescriptionPage
First Draft (Preliminary)-Mar. 15. 20120.9
Ver. 0.9 Mar. 15. 2012
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ygy
y
2
)
26.96 inches
G
1. General Description
The LM270WQ1 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
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 4 port LVDS interface.
It is intended to support displays where high brightness, super wide viewing angle, high color saturation,
and high color are important.
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LM270WQ1
Liquid Crystal Display
Product Specification
White LED
2560 vertical by 1440 horizontal pixel arra
10-bit 4 port LVDS interface.
LVDS
2Port
LVDS
2Port
MSTAR
Select
Bit
Select
ODC
Select
+12.0V
CN2
(41pin)
CN1
(51pin)
General Features
EEPROM
I2C
Timing
Controller
Power
Circuit Block
26.96 inches (68.47cm) diagonalActive Screen Size
630.0(H) x 368.2(V) x 14.8(D) mm (Typ.)Outline Dimension
Logic Power
3.3V / 1.8V
Vled
Mini-LVDS (RGB)
Source Driver Circuit
S1 S2560
G1
TFT - LCD Panel
(2560 Ý RGB Ý 1440 pixels)
G1440
B/L System (White LED)
0.2331 mm x 0.2331 mmPixel Pitch
2560 horiz. By 1440 vert
2560 horiz. By 1440 vert. Pixels RGB stripes arrangementPixel Format
1.07 Billion colors, 10Bit with A-FRCColor Depth
400cd/m
400cd/m
2
(1point)Luminance, White
(1point
View Angle Free (R/L 178(Typ.), U/D 178(Typ.))Viewing Angle(CR>10)
Power Consumption
Total 90.2Watt (Typ.)
@V
, Max 79.5 Watt_Duty 100% of DC 350 mA_w/o driver)
(10.7Watt
LCD
3800 g (typ.)Weight
Transmissive mode, normally blackDisplay Operating Mode
Glare (Low Reflection treatment of the front polarizer)Surface Treatment
lare
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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
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LM270WQ1
Liquid Crystal Display
Product Specification
Parameter Notes
Power Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity
Symbol
LCD
OP
ST
OP
ST
Values
MaxMin
500T
60-20T
Units
Vdc14-0.3V
¶C
¶C
%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.
2. Storage condition is guaranteed under packing condition.
FIG.1 Temperature and relative humidity
ڔڋڀ
ڑڋ
ڑڋڀ
at 25 r 2¶C
1,2
ڲۀۏٻڝېۇڽ
ڐڋ
گۀۈۋۀۍڼۏېۍۀٻڶڞڸ
ڏڋ
ڎڋ
ڍڋ
ڌڋ
ڋ
ڌڋ ڍڋ ڎڋ ڏڋ ڐڋ ڑڋ ڒڋ ړڋڋڈڍڋ
ڟۍ۔ٻڝېۇڽٻگۀۈۋۀۍڼۏېۍۀٻڶڞڸ
Ver. 0.9 Mar. 15. 2012
ڏڋڀ
ڌڋڀ
ڮۏۊۍڼۂۀ
ڪۋۀۍڼۏۄۊۉ
ڣېۈۄڿۄۏ۔ٻڶڃڀڄڭڣڸ
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22.0
p
T
d
q
n
3. Electrical Specifications
3-1. Electrical Characteristics
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LM270WQ1
Liquid Crystal Display
Product Specification
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, is typically generated by LED driver. The LED driver is an
iquid crystal.
external unit to the LCDs.
Table 2-1. ELECTRICAL CHARACTERISTICS
MODULE :
Note :
1. The specified current and power consumption are under the V
whereas mosaic pattern(8 x 6) is displayed and f
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.).
LED
Values
SymbolParameter
MaxTypMin
ILCDPower Supply Input Current
=12.0V, 25 r 2¶C,fV=60Hz condition
is the frame frequency.
V
LCD
FT array an
NotesUnit
Vdc12.612.011.4VLCDPower Supply Input voltage
mVp-p400-VdRFPermissive Power Input Ripple
1mA(1020)(890)-
2mA(1390)(1210)-
1Watt(12.4)(10.7)-PLCDPower Consumption
3A3.0--IRUSH_VLCDRush Current
FIG.2 pattern for Electrical characteristics
power consumption measurement power input ripple
White : 255Gray
Black : 0Gray
Mosaic Pattern(8 x 6)
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aximum current patter
Maximum current pattern
White Pattern
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Table 2-2. LED Bar ELECTRICAL CHARACTERISTICS
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LM270WQ1
Liquid Crystal Display
Product Specification
LED Bar Voltage
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.
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.
Bar
Bar
ConditionSymbolParameter
Values
Max.Typ.Min.
s
Unit
Notes
1,7LED :
2,7mA365350-IsLED String Current
3,7V534843VsLED String Voltage
3,7V229216-V
4,6,7Watt14.3512.610.85P
4,6,7Watt79.572-P
5,7Hrs--30,000LED_LTLED Life Time
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 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.
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 at 25 r 2¶C.
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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-RE51S-HF(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
DescriptionSymbolNo
1
2
3
4
5
6
7
8
9
10
15
20
26
GND
LVDS Format
GND11
R1AN12
R1AP13
R1BN14
R1BP
R1CN16
R1CP17
GND18
R1CLKN19
R1CLKP
GND21
R1DN22
R1DP23
R1EN24
R1EP25
Reserved
No ConnectionNC
No ConnectionNC
No ConnectionNC
No ConnectionNC
‘H’ or NC = Enable , ‘L’ = Disable ODC Select
‘H’= MSTAR Concept , ‘L’=normal
No ConnectionNC
Reference signal for inverter controlPWM_OUT
No ConnectionNC
FIRST LVDS Receiver Signal (A-)
FIRST LVDS Receiver Signal (A+)
FIRST LVDS Receiver Signal (B-)
FIRST LVDS Receiver Signal (B+)
FIRST LVDS Receiver Signal (C-)
FIRST LVDS Receiver Signal (C+)
FIRST LVDS Receiver Clock Signal(-)
FIRST LVDS Receiver Clock Signal(+)
FIRST LVDS Receiver Signal (D-)
FIRST LVDS Receiver Signal (D+)
FIRST LVDS Receiver Signal (E-)
FIRST LVDS Receiver Signal (E+)
No connection or GND
Ground
Ground
Ground
Ground
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Product Specification
No
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
Symbol
Bit Select
R2AN
R2AP
R2BN
R2BP
R2CN
R2CP
GND
R2CLKN
R2CLKP
GND
R2DN
R2DP
R2EN
R2EP
Reserved
Reserved
GND
GND
GND
NC
VLCD
VLCD
VLCD
VLCD
-
LM270WQ1
Liquid Crystal Display
Description
‘H’ = 10bit , ‘L’ = 8bit
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+)
Ground
SECOND LVDS Receiver Clock Signal(-)
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
Ground
Ground
Ground
No connection
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
-
-
Notes :
1. All GND(ground) pins should be connected together to the LCD module’s metal frame.
2. All V
LCD
(power input) pins should be connected together.
3. All Input levels of LVDS signals are based on the EIA 644 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.
5. LVDS pin (pin No. #24,25,40,41) are used for 10Bit(D) of the LCD module.
If used for 8Bit(R), these pins are no connection.
6. Specific pin No. #44 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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All GND(ground) pins should be conne
u
- LCD Connector(CN2): IS050-C41B-C39-A(manufactured by UJU) or FI-RE41S-HF(manufactured by JAE)
or compatible. Refer to below table.
- Mating Connector : FI-RE41HL or compatible.
Table 3-2. MODULE CONNECTOR(CN2) PIN CONFIGURATION
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LM270WQ1
Liquid Crystal Display
Product Specification
10
11
12
14
15
16
17
19
20
21
DescriptionSymbolNo
NC
2
3
5
6
7
8
9
NC
NC
NC4
NC
NC
NC
NC
GND
R3AN
R3AP
R3BN
R3BP13
R3CN
R3CP
GND
R3CLKN
R3CLKP18
GND
R3DN
R3DP
connection(Reserved)1
No
No connection
No connection
No connection
No connection
No connection
No connection
No connection
Ground
THIRD LVDS Receiver Signal (A-)
THIRD LVDS Receiver Signal (A+)
THIRD LVDS Receiver Signal (B-)
THIRD LVDS Receiver Signal (B+)
THIRD LVDS Receiver Signal (C-)
THIRD LVDS Receiver Signal (C+)
Ground
THIRD LVDS Receiver Clock Signal(-)
THIRD LVDS Receiver Clock Signal(+)
Ground
THIRD LVDS Receiver Signal (D-)
THIRD LVDS Receiver Signal (D+)
No
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Symbol
R3EN
R3EP
GND
GND
R4AN
R4AP
R4BN
R4BP
R4CN
R4CP
GND
R4CLKN
R4CLKP
GND
R4DN
R4DP
R4EN
R4EP
GND
GND
-
THIRD LVDS Receiver Signal (E-)
THIRD LVDS Receiver Signal (E+)
Ground
Ground
FORTH LVDS Receiver Signal (A-)
FORTH LVDS Receiver Signal (A+)
FORTH LVDS Receiver Signal (B-)
FORTH LVDS Receiver Signal (B+)
FORTH LVDS Receiver Signal (C-)
FORTH LVDS Receiver Signal (C+)
Ground
FORTH LVDS Receiver Clock Signal(-)
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+)
Ground
Ground
Description
Notes : 1. All GND(ground) pins should be connected together to the LCD module’s metal frame.
cted 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.
If used for 8Bit(R), these pins are no connection.
[CN1]
#1
CN1 CN2
#51 #1 #41
- Part/No. : IS050-C51B-C39-A(UJU)
- Mating connector : FI-RE51HL
(Manufactured by JAE)
[CN2]
#1 #51
#1 #41
- Part/No. : IS050-C41B-C39-A(UJU)
- Mating connector : FI-RE41HL
(Manufactured by JAE)
Rear view of LCM
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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
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LM270WQ1
Liquid Crystal Display
Product Specification
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3-3. LVDS characteristics
3-3-1. DC Specification
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LM270WQ1
Liquid Crystal Display
Product Specification
LVDS Common mode Voltage
LVDS Input Voltage Range
Change in common mode Voltage
3-3-2. AC Specification
LVDS Clock
LVDS Data
t
SKEW
CM
ID
IN
t
|LVDS Differential Voltage
CM
SKEW
NotesUnitMaxMinSymbolDescription
-mV600200|V
-V1.51.0V
-V1.80.7V
-mV250-ȟV
T
clk
(
F
clk
=1 /T
)
clk
LVDS Clock to Data Skew Margin
LVDS Clock to Clock Skew Margin
Effective time of LVDS
SKEW
SKEW_EO
eff
CLK
)/7t
CLK
+ 1/7-1/7t
ps+ (0.25*t
)/7- (0.25*t
clk
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NotesUnitMaxMinSymbolDescription
-T
-ps520t
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- LVDS Effective Period
LVDS
data+
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LM270WQ1
Liquid Crystal Display
Product Specification
260ps
tc/70.5*tc/7
Vcm
LVDS
Data-
LVDS
Clock+
Vcm
LVDS
Clock-
260ps
l VID l
t
eff
Vfsw
- tc/7 : Unit Interval
- tc : Clock Period
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3-3-3. LVDS Data format (Bit Select)
Bit Select “H” : 10Bit Data-Mapping (VESA format)
RCLKP
RCLKM
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LM270WQ1
Liquid Crystal Display
Product Specification
RAP
RBP
RCP
RDP
REP
R15 R14 R13 R12G10 R11R10’ R10R11’ G10”
B10 G15 G14 G13B11 G12G11’ G11G12’ B15”
V
SYNCHSYNC
B17 B16 G17 G16X R17R16’ R16R17’ X”
B19 B18 G19 G18X R19R18’ R18R19’ X”
B15 B14DE B13B12’ B12B13’ DE”
Bit Select “L” : 8Bit Data-Mapping (VESA format)
RCLKP
RCLKM
RAP
RBP
RCP
RDP
R15 R14 R13 R12G10 R11R10’ R10R11’ G10”
B10 G15 G14 G13B11 G12G11’ G11G12’ B15”
V
SYNCHSYNC
B17 B16 G17 G16X R17R16’ R16R17’ X”
B15 B14DE B13B12’ B12B13’ DE”
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3-4. Signal Timing Specifications
All of the interface signal timing should be satisfied with the following specifications for it’s proper operation.
Table 4. TIMING TABLE (VESA COORDINATED VIDEO TIMING)
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LM270WQ1
Liquid Crystal Display
Product Specification
DCLK
Hsync
Vsync
Data
Enable
Period
Frequency
Period
Width-Active
Period
Frequency
Width-Active
Horizontal Valid
Horizontal Back Porch
Horizontal Front Porch
Vertical Valid
Vertical Back Porch
Vertical Front Porch
Symbol
CLK
CLK
HP
WH
VP
V
WV
HV
HBP
HFP
VV
VBP
VFP
NotesUnitMax.Typ.Min.Parameter
ns16.6716.5616.46t
MHz60.7560.3860f
682680678t
t
CLK
888t
148314811479t
555t
640640640t
222018t
141210t
444036-Horizontal Blank
144014401440t
343332t
432t
t
t
t
t
HP
Hz60.1259.9559.38f
HP
CLK
HP
Pixel frequency
: Typ.241.5MHz
t
WH+ tHBP+ tHFP
434139-Vertical Blank
Note:
1. DE Only mode operation. The input of Hsync & Vsync signal does not have an effect
on LCD normal operation.
2. The performance of the electro-optical characteristics may be influenced by variance of the
vertical refresh rates.
3. Horizontal period should be even.
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t
WV+ tVBP+tVFP
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3-5. Signal Timing Waveforms
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LM270WQ1
Liquid Crystal Display
Product Specification
Hsync, Vsync, DE, DATA
t
CLK
Dclk
INVALID
DATA
DE(Data Enable)
Hsync
t
WH
0.5VDD
0.7VDD
0.3VDD
VALID
Data are latched at the falling edge of DCLK
t
HP
INVALID
t
HBP
t
HV
DE(Data Enable)
t
VP
t
WV
Vsync
t
VBP
t
DE(Data Enable)
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VV
t
t
HFP
VFP
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ࣾ
ࣿ
ࣜࣿࣜ
3-6. Color Data Reference
The Brightness of each primary color(red,green,blue) is based on the 10-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 5. COLOR DATA REFERENCE
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LM270WQ1
Liquid Crystal Display
Product Specification
ࣾ
ࣿ
ࣾ
࣭࣮࣯ࣜࣤ࣬ࣥ
࣭࣮࣯ࣜࣤ࣬ࣥ
࣭࣮࣯ࣾࣜࣤ࣬ࣥ
ࣿ
ࣜࣤ࣬࣬࣬ࣥࣜ
࣭ࣜࣤ࣬࣬ࣥ
࣪࣪࣪
࣭࣮࣮ࣜࣤ࣬ࣥ
࣭࣮࣯ࣜࣤ࣬ࣥ
ࣜࣤ࣬࣬࣬ࣥࣜ
ࣾࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣾ
ࣾࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣾ
ࣾࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣾ
ࣰࣰࣰࣱࣱࣱࣲࣲࣲ࣯࣮࣭࣯࣮࣭࣯࣮࣭ࣾࣵࣜࣾࣴࣜࣾࣳࣜࣾࣜࣾࣜࣾࣜࣾࣜࣾࣜࣾࣜࣾ࣬ࣵࣜࣴࣜࣳࣜࣜࣜࣜࣜࣜࣜ࣬ࣵࣜࣴࣜࣳࣜࣜࣜࣜࣜࣜࣜ࣬
࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ
࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ
࣪࣪࣪࣪࣪࣪࣪࣪࣪
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ࣬
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ
࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣭࣭࣭࣭࣭࣭࣭࣭ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
࣭࣭࣭࣭࣭࣭࣭࣭࣭࣭ࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬ࣜࣜ࣬
ࣾ
࣭ࣜࣤ࣬࣬ࣥ
࣪࣪࣪
࣭࣮࣮ࣜࣤ࣬ࣥ
࣭࣮࣯ࣜࣤ࣬ࣥ
ࣾࣜࣤ࣬࣬࣬ࣥࣜ
࣭ࣾࣜࣤ࣬࣬ࣥ
࣪࣪࣪
࣭࣮࣮ࣾࣜࣤ࣬ࣥ
࣭࣮࣯ࣾࣜࣤ࣬ࣥ
Ver. 0.9 Mar. 15. 2012
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࣪࣪࣪࣪࣪࣪࣪࣪࣪
࣪࣪࣪࣪࣪࣪࣪࣪࣪
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3-7. Power Sequence & Dip condition for LCD Module
3-7-1. Power Sequence
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LM270WQ1
Liquid Crystal Display
Product Specification
Power Supply For LCD
V
LCD
Interface Signal (Tx)
Option Signal
(LVDS_select, BIT_select)
Power for Lamp
Table 6. Power sequence
Parameter
0V
0V
10%
90%
T
1
30%
90%
10%
7
T
2
T
Invalid
Data
T
8
Valid Data
T
3
T
4
Invalid
Data
5
T
T
9
Lamp On
Values
Units
MaxTypMin
ms10-0.5T1
ms50-0.5T2
ms--500T3
--200T4
ms
ms50-0.01T5
s-1T7
msT2-0.5T8
ms--0T9
Notes :
1. Please V
power on only after connecting interface cable to LCD.
LCD
2. Please avoid floating state of interface signal at invalid period.
3. When the interface signal is invalid, be sure to pull down the power supply for
LCD V
LCD
to 0V.
4. Lamp power must be turn on after power supply for LCD an interface signal are valid.
5. If the on time of signals (Interface signal and Option signals) precedes the on time of Power (V
it will be happened abnormal display.
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LCD
),
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LCD
3-7-2. V
Power Dip Condition
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Product Specification
t
d
V
LCD
V
LCD_dip
LM270WQ1
Liquid Crystal Display
Notes :
Dip condition
LCD
V
_dip ᆙV
X 0.2, tdᆙ20ms
LCD_typ
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000
00
4. Optical Specifications
Optical characteristics are determined after the unit has been ‘ON’ for approximately 70 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 ) and T equal to 0 ¶ and aperture 1 degree.
FIG. 2 presents additional information concerning the measurement equipment and method.
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LM270WQ1
Liquid Crystal Display
Product Specification
Pritchard 880
or equivalent
Optical Stage(x,y)
LCD Module
50cm
FIG. 3 Optical Characteristic Measurement Equipment and Method
Table 8. OPTICAL CHARACTERISTICS
SymbolParameter
Surface Luminance, white
Luminance Variation
Response Time
Color Coordinates
[CIE1931]
Color Shift
Viewing Angle (CR>10)
General
Effective 7Degree
Horizontal
Vertical
Horizontal
Vertical
Gray to Gray
RED
GREEN
BLUE
WHITE
Horizontal
Vertical
WH
G
WHITE
GTG_AVR
GTG_MAX
Rx
T
CST_H
T
CST_V
T
H
T
V
T
GMA_H
T
GMA_V
Typ
-0.03
(Ta=25 ¶C, V
Values
1
4
0.652
0.334Ry
0.304Gx
0.619Gy
0.148Bx
0.049By
0.308Wx
0.325Wy
=12.0V, fV=60Hz Dclk=241.5MHz)
LCD
MaxTypMin
-1000700CRContrast Ratio
-400320L
Typ
+0.03
-178-
-178-
-178170
-178170
-178
-178
NotesUnits
1
2
2cd/m
3%75
4ms-6-T
4ms12--T
5Degree
6Degree
82.2Gray Scale
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Notes 1. Contrast Ratio(CR) is defined mathematically as :
It is measured at center point(Location P1)
2. Surface luminance(LWH)is luminance value at No.1 point across the LCD surface 50cm
from the surface with all pixels displaying white. For more information see FIG 4.
3. The variation in surface luminance , G WHITE is defined as :
RatioContrast
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LM270WQ1
Liquid Crystal Display
Product Specification
pixelswhiteallwithLuminanceSurface
pixels black all with Luminance Surface
G
WHITE
Where L1 to L9 are the luminance with all pixels displaying white at 9 locations.
For more information see FIG 4.
4. Gray to gray response time is the time required for the display to transition from gray to gray.
For additional information see Table 9.
5. Color shift is the angle at which the color difference is lower than 0.04.
For more information see FIG 5.
- Color difference (ȟu’v’)
4
'
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 6.
x
3122
yx
2
21
}
'
v
)''()''('' vvuuvu '
21
)L .. ,L,Minimum(L
P9P2P1
100
u
)L .... ,L ,(L Maximum
P9P2P1
9
y
3122
yx
u’1, v’1 : u’v’ value at viewing angle direction
2
u’2, v’2 : u’v’ value at front (ɂ=0)
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 7 and FIG 8.
8. Gray scale specification
Gamma Value is approximately 2.2. For more information see Table 10.
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Measuring point for surface luminance & measuring point for luminance variation.
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LM270WQ1
Liquid Crystal Display
Product Specification
<Measuring point for luminance variation> <Measuring point for surface luminance>
H
H/2
V/2
V
V/10
56
7
Active Area
3
1
8
H : 596.74 mm
H/10
H/2
42
9
H
V/2
V
V : 335.66 mm
@ H,V : Active Area
FIG. 4 Measure Point for Luminance
The gray to gray response time is defined as the following figure and shall be measured by switching the
input signal for “Gray To Gray”.
- Gray step : 5 step
-T
-T
GTG_AVR
GTG_MAX
is the total average time at rising time and falling time for “Gray To Gray”.
is the max time at rising time or falling time for “Gray To Gray”.
Table 9. Gray to gray response time table
Gray to Gray
G255
G191
Falling Time
G127
G63
G0
Ver. 0.9 Mar. 15. 2012
Rising Time
G0G63G127G191G255
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Color shift is defined as the following test pattern and color.
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LM270WQ1
Liquid Crystal Display
Product Specification
25% Box size
FIG. 5 Test Pattern
Average RGB values in Bruce RGB for Macbeth Chart
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
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Dimension of viewing angle range.
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LM270WQ1
Liquid Crystal Display
Product Specification
I
= 180q, Left
I
= 270q, Down
Normal
E
T
I
FIG. 6 Viewing angle
Y
I
= 90q, Up
I
= 0q, Right
FIG. 7 Sample Luminance vs. gray scale
(using a 256 bit gray scale)
r
LaVL
b
FIG. 8 Sample Log-log plot of luminance
vs. gray scale
b
Here the Parameter Ȼ and Ƚ relate the signal level V to the luminance L.
The GAMMA we calculate from the log-log representation (FIG. 7)
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)log()log()log( aVrLL
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Table 10. Gray Scale Specification
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LM270WQ1
Liquid Crystal Display
Product Specification
Relative Luminance [%] (Typ.)Gray Level
0.100
31
63
95
127
159
191
223
255
1.08
4.71
11.5
21.7
35.5
53.1
74.5
100
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5. Mechanical Characteristics
The contents provide general mechanical characteristics. In addition the figures in the next page are detailed
mechanical drawing of the LCD.
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LM270WQ1
Liquid Crystal Display
Product Specification
630.0mmHorizontal
Outline Dimension
Bezel Area
Active Display Area
Surface Treatment
3800g (Typ.)Weight
Hard coating(2H)
Glare, Low Reflection treatment of the front polarizer
368.2mmVertical
14.8mmDepth
601.8mmHorizontal
340.6mmVertical
596.74mmHorizontal
335.66mmVertical
Notes : Please refer to a mechanic drawing in terms of tolerance at the next page.
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<FRONT VIEW>
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Liquid Crystal Display
Product Specification
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6. Reliability
Environment test condition
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LM270WQ1
Liquid Crystal Display
Product Specification
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
Vibration test
5
(non-operating)
Shock test
6
(non-operating)
Altitude
7
Operating
Storage / Shipment
Wave form : random
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 : ᇹX, ᇹY, ᇹZ
One time each direction
0 - 10,000 feet(3,048m)
0 - 40,000 feet(12,192m)
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7. International Standards
7-1. Safety
a) UL 60950-1, Second Edition, Underwriters Laboratories Inc.
Information Technology Equipment - Safety - Part 1 : General Requirements.
b) CAN/CSA C22.2 No.60950-1-07, Second Edition, Canadian Standards Association.
Information Technology Equipment - Safety - Part 1 : General Requirements.
c) EN 60950-1:2006 + A11:2009, European Committee for Electrotechnical Standardization(CENELEC).
Information Technology Equipment - Safety - Part 1 : General Requirements.
d) IEC 60950-1:2005, Second Edition, The International Electrotechnical Commission (IEC).
Information Technology Equipment - Safety - Part 1 : General Requirements.
(Including report of IEC60825-1:2001 clause 8 and clause 9)
Notes
1. Laser (LED Backlight) Information
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LM270WQ1
Liquid Crystal Display
Product Specification
jGXtGslkGw
plj]W_Y\TXGaGYWWX
lGslkGwGOjGXtP
2. Caution
: LED inside.
Class 1M laser (LEDs) radiation when open.
Do not open while operating.
7-2. EMC
a) ANSI C63.4 “American National Standard for Methods of Measurement of Radio-Noise
Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz.”
American National Standards Institute (ANSI), 2003.
b) CISPR 22 “Information technology equipment – Radio disturbance characteristics – Limit and
methods of measurement." International Special Committee on Radio Interference
(CISPR), 2005.
c) CISPR 13 “Sound and television broadcast receivers and associated equipment – Radio disturbance
characteristics – Limits and method of measurement." International Special Committee on Radio
Interference (CISPR), 2006.
7-3. Environment
a) RoHS, Directive 2002/95/EC of the European Parliament and of the council of 27 January 2003
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8. Packing
8-1. Designation of Lot Mark
a) Lot Mark
ABCDEFGHI JKLM
A,B,C : SIZE(INCH) D : YEAR
E : MONTH F ~ M : SERIAL NO.
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LM270WQ1
Liquid Crystal Display
Product Specification
Note
1. YEAR
Year
Mark
2. MONTH
Month
Mark
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 : 7 pcs
b) Box Size : 747mm X 335mm X 466mm
2008920090201012011
8
Jun
6
Jul8Aug9Sep
7
543
200672007
6
Apr5May
4
200520042003
2012
2
Oct
A
Nov
B
DecMarFebJan
C321
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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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LM270WQ1
Liquid Crystal Display
Product Specification
9-2. OPERATING PRECAUTIONS
(1) The spike noise causes the mis-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.
(10) Partial darkness may happen during 3~5 minutes when LCM is operated initially in condition that
luminance is under 40% at low temperature (under 5ఁ). This phenomenon which disappears naturally
after 3~5 minutes is not a problem about reliability but LCD characteristic
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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.
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LM270WQ1
Liquid Crystal Display
Product Specification
(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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