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LM240WU7
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ● ) Final Specification
BUYER
MODEL
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APPROVED BY
/
/
NDS
SIGNATURE
DATE
24.0” WUXGA TFT LCDTitle
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
H.S KIM / G.Manager
REVIEWED BY
J.Y LEE / Manager [C]
K.H MOON / Manager [M]
LG Display Co., Ltd.SUPPLIER
LM240WU7*MODEL
SLA1SUFFIX
SIGNATURE
DATE
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0 Apr. 3 . 2009
G.T KIM / Manager [P]
PREPARED BY
S.J Lee / Engineer
MNT Products Engineering Dept.
LG Display Co., Ltd.
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LM240WU7
Liquid Crystal Display
Product Specification
Contents
PageITEMNo
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
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VLCD DIP CONDITION3-7
OPTICAL SFECIFICATIONS4
MECHANICAL CHARACTERISTICS5
1
2
3
4
5
6
6
9
14
15
16
17
18
19
25
RELIABLITY6
INTERNATIONAL STANDARDS7
SAFETY7-1
EMC7-2
ENVIRONMENT7-3
PACKING8
DESIGNATION OF LOT MARK8-1
PACKING FORM8-2
PALLET FORM8-3
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27
27
27
27
28
28
29
30
31PRECAUTIONS9
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LM240WU7
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision
No
PageRevision Date
First Draft(Preliminary)-Nov. 7. 20080.0
Update the General Features4Feb. 5. 20090.1
Update the Electircalcharacteristics6
Update the Optical specifications19
Updated the Mechanical Drawing26, 27
Update the Optical specifications19Mar. 17. 20090.2
Updated the Mechanical Drawing26
Updated the Mechanical Drawing27Apr. 3. 20091.0
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Description
Ver. 1.0 Apr. 3 . 2009
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LM240WU7
Liquid Crystal Display
Product Specification
1. General Description
LM240WU7 is a Color Active Matrix Liquid Crystal Display with anintegral Cold Cathode Fluorescent
Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissivetype display operating in the normally black mode. It has a 24inch diagonally measured
active display area with WUXGA resolution (1200 vertical by 1920horizontal 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(True) colors.
Ithas been designed to apply the 8Bit 2 port LVDS interface.
It is intended to support displays where high brightness, super wide viewing angle,
high color saturation, and high color are important.
LVDS
2port
CN1
(30pin)
+12.0V
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General Features
+12.0V
V
Lamp
24.1 inches(61.13cm) diagonalActive Screen Size
546.4(H) x 352.0(V) x 35.7(D) mm(Typ.) * without inverterOutline Dimension
0.270 mm x 0.270 mmPixel Pitch
RGB
Timing
Controller
Power Circuit
Block
2 x 6Sockets (High)
Source Driver Circuit
S1 S1920
TFT -LCD Panel
(1920 × RGB × 1200 pixels)
Back light Assembly
(U-Shape 6CCFL)
1920 horiz. By 1200 vert. Pixels RGB stripes arrangementPixel Format
8-bit, 16,777,216 colorsColor Depth
400cd/m
View Angle Free (R/L 178(Typ.), U/D 178(Typ.))Viewing Angle(CR>10)
Total 69.72Watt (Typ.) ( 6.72 Watt@VLCD, 63 Watt @Vlamp)Power Consumption
2830 g (typ.) Weight
Transmissive mode, normally blackDisplay Operating Mode
Hard coating(3H), Anti-glare treatment of the front polarizerSurface Treatment
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2
( Center 1 points)Luminance, White
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LM240WU7
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
60
Values
MaxMin
500TOP
60-20TST
90%
60%
40%
Humidity [(%)RH]
10%
Parameter Notes
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.
Note : 2. Maximum Storage Humidity is up to 40℃, 70% RH only for 4 corner light leakage Mura.
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Wet Bulb
Temperature [C]
10
0
Symbol
50
40
30
20
Units
at 25 ± 2°CVdc14-0.3VLCD
°C
°C
%RH9010HOP
%RH9010HST
Storage
Operation
1, 2
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [C]
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LM240WU7
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 CCFL, is typically generated by an inverter. The inverter is an
external unit to the LCDs.
Table 2. ELECTRICAL CHARACTERISTICS
Parameter Symbol
MODULE :
Differential Impedance
LAMP :
Operating Frequency
Discharge Stabilization Time
Power Consumption
Life Time
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at 25 °C
at 0 °C
Values
MaxTypMin
Vdc12.612.011.4VLCDPower Supply Input Voltage
ILCDPower Supply Input Current
Zm
11010090
1950(3.0mA)1750(6.0mA) 1550(8.0mA)VBLOperating Voltage
8.06.03.0IBLOperating Current
2500
2900
ohm
RMS
RMS
V
RMS
V
RMS
NotesUnit
1mV400VRFPermissive Power Input Ripple
2mA644560476
3mA845735625
2Watt7.736.72-PLCDPower Consumption
4A3--IRUSHRush current
5, 6V
5mA
5,7VsEstablished Starting Voltage
8kHz805540fBL
5, 9Min3-Ts
10Watt69.363PBL
5, 11Hrs50,000
Note : The design of the inverter must have specifications for the lamp in LCD Assembly.
The performance of the Lamp in LCM, for example life time or brightness, is extremely influenced by
the characteristics of the DC-AC inverter. So all the parameters of an inverter should be carefully
designed so as not to produce too much leakage current fromhigh-voltage output of the inverter.
When you design or order the inverter, please make sure unwanted lighting caused by the mismatch
of the lamp and the inverter (no lighting, flicker, etc) never occurs. When you confirm it, the LCD–
Assembly should be operated in the same condition as installed in you instrument.
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LM240WU7
Liquid Crystal Display
Product Specification
Note : Do not Insert conducting Meterialto lamp connecting socket. If the conducting Meterialis inserted
to the lamp connecting sockets, TFT-LCD Module has a low luminance and the inverter has abnormal
action. Because leakage current is occurred between lampconnecting socket and conducting material.
1. Permissive power ripple should be measured under V
time, we recommend the bandwidth configuration of oscilloscope is to be under 20Mhz.
2. The specified current and power consumption are under the V
whereas mosaic pattern(8 x 6) is displayed and fVis the frame frequency.
3. The current is specified at the maximum current pattern.
4. The duration of rush current is about 2ms and rising time of power Input is 1ms(min.).
5. Specified values are for a single lamp.
6. Operating voltage is measured at 25 ± 2°C. The variance of the voltage is ± 10%.
7. The voltage above VSshould be applied to the lamps for more than 1 second for start-up.
(Inverter open voltage must be more than lamp starting voltage.)
Otherwise, the lamps may not be turned on. The used lamp current is the lamp typical current.
8. The output of the inverter must have symmetrical(negativeand positive) voltage waveform and
symmetrical current waveform (Unsymmetrical ratio is less than 10%). Please do not use the inverter
which has unsymmetrical voltage and unsymmetrical current and spike wave.
Lamp frequency may produce interface with horizontal synchronous frequency and as a result this may
cause beat on the display. Therefore lamp frequency shall be as away possible from the horizontal
synchronous frequency and from its harmonics in order to prevent interference.
9. Let’s define the brightness of the lamp after being lighted for 5 minutes as 100%.
TSis the time required for the brightness of the center of the lamp to be not less than 95%.
The used lamp current is the lamp typical current.
10. The lamp power consumption shown above does not include loss of external inverter.
The used lamp current is the lamp typical current. (PBL= VBLx IBLx N
11. The life is determined as the time at which brightness of the lamp is 50% compared to that of initial
value at the typical lamp current on condition of continuous operating at 25 ± 2°C.
12. Requirements for a system inverter design, which is intended to have a better display performance,
a better power efficiency and a more reliable lamp, are following.
It shall help increase the lamp lifetime and reduce leakage current.
a. The asymmetry rate of the inverter waveform should be less than 10%.
b. The distortion rate of the waveform should be within √2 ±10%.
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* Inverter output waveform had better be more similar to ideal sine wave.
=12.0V, 25 ± 2°C,fV=60Hzconditionand At that
LCD
=12.0V, 25 ± 2°C,fV=60Hz condition
LCD
)
Lamp
* Asymmetry rate:
I p
I -p
13. The inverter which is combined with this LCM, is highly recommended to connect coupling(ballast)
condenser at the high voltage output side. When you use the inverter which has not coupling(ballast)
condenser, it may cause abnormal lamp lighting because ofbiased mercury as time goes.
14. In case of edgy type back light with over 6 parallel lamps, input current and voltage wave form should
be synchronized
Ver. 1.0 Apr. 3 . 2009
| I p– I –p| / I
* Distortion rate
I p(or I –p) / I
rms
rms
x 100%
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LM240WU7
Liquid Crystal Display
Product Specification
< Permissive Power Input Ripple (V
White Pattern
< Power consumption (V
Typical current pattern
(White : 255Gray, Black : 0Gray)
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LCD
=12.0V, 25 ± 2°C,fV=60Hz) >
LCD
Black Pattern
=12.0V, 25 ± 2°C,fV=60Hz) >
Maximum current pattern
Mosaic Pattern(8 x 6)
[ Figure 1 ] Mosaic pattern & Black Pattern for power consumption measurement
Ver. 1.0 Apr. 3 . 2009
White Pattern
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Liquid Crystal Display
Product Specification
3-2. Interface Connections
3-2-1. LCD Module
-LCD Connector(CN1) : IS100-L30B-C23 (UJU), KDF71G-30S-1H (Hirose )or Equivalent
-Mating Connector : FI-X30C2L (Manufactured by JAE) or Equivalent
Table 3 MODULE CONNECTOR(CN1) PIN CONFIGURATION
Symbol
SymbolNo
FR0M1
Minus signal of odd channel 0 (LVDS)
Description
No
16
SR1P
Plus signal of even channel 1 (LVDS)
Description
LM240WU7
FR0P2
FR1M3
FR1P4
FR2M5
FR2P6
GND7
FCLKINM8
FCLKINP9
FR3M10
FR3P11
SR0M12
SR0P13
GND14
SR1M15
Plus signal of odd channel 0 (LVDS)
Minus signal of odd channel 1 (LVDS)
Plus signal of odd channel 1 (LVDS)
Minus signal of odd channel 2 (LVDS)
Plus signal of odd channel 2 (LVDS)
Ground
Minus signal of odd clock channel
(LVDS)
Plus signal of odd clock channel (LVDS)
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Minus signal of odd channel 3 (LVDS)
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Plus signal of odd channel 3 (LVDS)
Minus signal of even channel 0 (LVDS)
Plus signal of even channel 0 (LVDS)
Ground
Minus signal of even channel 1 (LVDS)
17
18
19
20
21
22
23
24
25
26
27
28
29
30
GND
SR2M
SR2P
SCLKINM
SCLKINP
SR3M
SR3P
GND
OPEN
OPEN
PWM
ODC ON
VLCD
VLCD
Ground
Minus signal of even channel 2 (LVDS)
Plus signal of even channel 2 (LVDS)
Minus signal of even clock channel (LVDS)
Plus signal of even clock channel (LVDS)
Minus signal of even channel 3 (LVDS)
Plus signal of even channel 3 (LVDS)
Ground
NC
NC
PWM_OUT for Wavy Noise
ODC ON/OFF Control
H : ODC ON , L : ODC OFF
Default : ODC ON ( No connection)
Power Supply +12.0V
Power Supply +12.0V
Note: 1. All GND(ground) pins should be connected together and to Vss which should also be connected to
the LCD’s metal frame.
2. All VLCD (power input) pins should be connected together.
3. Input Level of LVDS signal is based on the EIA 664 Standard.
User Connector Diagram
1
Ver. 1.0 Apr. 3 . 2009
30
#1 #30
Rear view of LCM
IS100-L30B-C23(UJU)
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LM240WU7
Liquid Crystal Display
Product Specification
Table 4. REQUIRED SIGNAL ASSIGNMENT FOR Flat Link (TI:SN75LVDS83) Transmitter
Pin # Require SignalPin Name Pin # Require SignalPin Name
1 Power Supply for TTL InputVCC 29 Ground pin for TTLGND
2 TTL Input (R7)D5 30 TTL Input (DE)D26
3 TTL Input (R5)D6 31 TTL Level clock InputTXCLKIN
4 TTL Input (G0)D7 32 Power Down InputPWR DWN
5 Ground pin for TTLGND 33 Ground pin for PLLPLL GND
6 TTL Input (G1)D8 34 Power Supply for PLLPLL VCC
7 TTL Input (G2)D9 35 Ground pin for PLLPLL GND
8 TTL Input (G6)D10 36 Ground pin for LVDSLVDS GND
9 Power Supply for TTL InputVCC 37 Positive LVDS differential data output 3TxOUT3＋
10 TTL Input (G7)D11 38 Negative LVDS differential data output 3TxOUT3－
11 TTL Input (G3)D12 39 Positive LVDS differential clock outputTXCLKOUT＋
12 TTL Input (G4)D13 40 Negative LVDS differential clock outputTXCLKOUT－
13 Ground pin for TTLGND 41 Positive LVDS differential data output 2TXOUT2＋
14 TTL Input (G5)D14 42 Negative LVDS differential data output 2TXOUT2－
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15 TTL Input (B0)D15 43 Ground pin for LVDSLVDS GND
16 TTL Input (B6)D16 44 Power Supply for LVDSLVDS VCC
17 Power Supply for TTL InputVCC 45 Positive LVDS differential data output 1TXOUT1＋
19 TTL Input (B1)D18
20 TTL Input (B2)D19
22 TTL Input (B3)D20
23 TTL Input (B4)D21
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46 Negative LVDS differential data output 1TXOUT1－18 TTL Input (B7)D17
47 Positive LVDS differential data output 0TXOUT0＋
48 Negative LVDS differential data output 0TXOUT0－
49 Ground pin for LVDSLVDS GND21 Ground pin for TTL InputGND
50 TTL Input (R6)D27
51 TTL Input (R0)D0
24 TTL Input (B5)D22
25 TTL Input (RSVD)D23
26 Power Supply for TTL InputVCC 54 TTL Input (R2)D2
Notes : Refer to LVDS Transmitter Data Sheet for detail descriptions.
Ver. 1.0 Apr. 3 . 2009
52 TTL Input (R1)D1
53 Ground pin for TTLGND
55 TTL Input (R3)D327 TTL Input (HSYNC)D24
56 TTL Input (R4)D428 TTL Input (VSYNC)D25
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LM240WU7
Liquid Crystal Display
Product Specification
LVDS Input characteristics
1. DC Specification
LVDS Common mode Voltage
LVDS Input Voltage Range
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2. AC Specification
LVDS Clock to Data Skew Margin
LVDS Clock to Clock Skew Margin (Even to
Odd)
CM
IN
SKEW
SKEW
SKEW_EO
-600
-1/7
NotesUnitMaxMinSymbolDescription
-mV600100|VID|LVDS Differential Voltage
-V1.80.6V
-V2.10.3V
NotesUnitMaxMinSymbolDescription
85MHz > Fclk ≥ 65MHzps+ 400-400t
65MHz > Fclk ≥ 25MHz
ps+ 600t
+ 1/7t
T
clk
-
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LM240WU7
Liquid Crystal Display
Product Specification
< Clock skew margin between channel >
3. Data Format
1) LVDS 2 Port
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< LVDS Data Format >
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LM240WU7
Liquid Crystal Display
Product Specification
2) LVDS 1 Port
RCLK+
RA+/-
RB+/-
RC+/-
RD+/-
R3 R2
G4 G3
B5 B4
G7 G6
Previous(N-1)thCycle Next(N+1)thCycle
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R1 R0
G2 G1
B3 B2
R7 R6
G0 R5 R4 R3 R2 R1 R0
B1 B0 G5 G4 G3 G2 G1
DE VSYNC HSYNC B5 B4 B3 B2
X B7 B6 G7 G6 R7 R6
Current(Nth) Cycle
G0
B1
DE
VSYNC HSYNC
X
R5 R4
B0 G5
B7 B6
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LM240WU7
Liquid Crystal Display
Product Specification
3-3. Signal Timing Specifications
This is signal timing required at the input of the TMDS transmitter. All of the interface signal timing should be
satisfied with the following specifications for it’s proper operation.
Table 5. TIMING TABLE (VESA COORDINATED VIDEO TIMING)
DCLK
Hsync
Vsync
Data
SYMBOL
Period
Frequency
Period
Width-Active
Period
Frequency
Width-Active
Horizontal Valid
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Horizontal Back Porch
104410401036tHP
161616tWH
666tWV
960960960tHV
444036tHBP
Horizontal Front Porch
Horizontal Blank
282420tHFP
ns13.1612.9812.82tCLK
MHz787776fCLK
tCLK
tHP123712351233tVP
Hz6159.9558.85fV
tHP
tCLK
NoteUnitMaxTypMinITEM
Pixel frequency
: Typ. 154MHz
tWH+ tHBP+ tHFP848076-
Enable
Note: Hsyncperiod and Hsyncwidth-active should be even number times of tCLK. If thevalue is odd number
Ver. 1.0 Apr. 3 . 2009
Vertical Valid
Vertical Back Porch
Vertical Front Porch
Vertical Blank
times of tCLK, display control signal can be asynchronous.In order tooperate this LCM a Hsync,
Vsyn, 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. Vsyncand Hsyncshould be keep the above specification.
3. HsyncPeriod, HsyncWidth, and Horizontal Back Porch should be any times of of character
number(8).
4. The polarity of Hsync, Vsyncis not restricted.
-
120012001200tVV
272625tVBP
tHP
432tVFP
tWV+ tVBP+ tVFP373533
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LM240WU7
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
WV
Vsync
t
VBP
DE(Data Enable)
Ver. 1.0 Apr. 3 . 2009
t
HV
t
VP
t
VV
t
t
HFP
VFP
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LM240WU7
Liquid Crystal Display
Product Specification
3-5. Color Input Data Reference
The Brightness of each primary color(red,green,blue) is based onthe 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 6. 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 B2 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 Apr. 3 . 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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3-6. Power Sequence
LM240WU7
Liquid Crystal Display
Product Specification
V
LCD
90%
90%
Power Supply, V
Interface Signal, V
(Digital RGB signal,
SCDT ,V
Clock to PanelLink
Transmitter)
Power Supply for Backlight
Inverter
Table 7. POWER SEQUENCE
sync
LCD
i
, H
, DE,
sync
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Parameter
0V
0V
10%
T1
T2 T5 T7
Valid Data
T3
LAMP ONLAMP OFF
T6
T4
10%
Values
MaxTypMin
LAMP OFF
Units
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. Lamp power must be turn on after power supply forLCD and interface signal are valid.
Ver. 1.0 Apr. 3 . 2009
ms10-0.5T1
ms50-0.01T2
ms--500T3
--200T4
ms
ms50-0.01T5
ms-500T7
LCD
to0V.
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3-7. VLCD Power Dip Condition
Product Specification
V
V
LCD_dip
LM240WU7
Liquid Crystal Display
LCD
Dip condition
VLCD_dip ≤V
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X 0.2, td≤20ms
LCD_typ
t
d
[ Figure 2 ] Power dip condition
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LM240WU7
Liquid Crystal Display
Product Specification
4. Optical Specifications
Optical characteristics are determined after the unit has been ‘ON’ for approximately 30 minutes
in a dark environment at 25±2°C. The values specified are at an approximate distance 50cm fromthe LCD
surface at a viewing angle of Φ and θ equal to 0 ° and aperture 1 degree.
FIG 3 presents additional information concerning the measurement equipment and method.
Optical Stage(x,y)
[ FIG 3 ] Optical Characteristic Measurement Equipment and Method
Table 8. OPTICAL CHARACTERISTICS
Surface Luminance, white
Luminance Variation
Response Time
Color Coordinates
[CIE1931]
Color Shift
Viewing Angle (CR>10)
General
Effective 8Degree
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Horizontal
Vertical
Horizontal
Vertical
Rise Time
Decay Time
Gray to Gray
RED
GREEN
BLUE
WHITE
Horizontal
Vertical
LCD Module
SymbolParameter
WH
WHITE
R
D
GTG_AVR
GTG_MAX
Rx
θ
CST_H
θ
CST_V
H
V
θ
GMA_H
θ
GMA_V
50cm
(Ta=25 °C, V
Typ
-0.03
=12.0V, fV=60Hz Dclk=154MHz, VBR=3.3V)
LCD
Values
400320L
0.644
0.335Ry
0.304Gx
0.613Gy
0.146Bx
0.070By
0.313Wx
0.329Wy
Pritchard 880 or
equivalent
MaxTypMin
Typ
+0.03
-178-
-178-
-178170θ
-178170θ
-178
-178
NotesUnits
11000700CRContrast Ratio
2
2cd/m
3%75δ
4ms127.5-Tr
4ms127.5-Tr
5ms-5-T
5ms12--T
6Degree
7Degree
92.2Gray Scale
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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 4.
L
= = Average[ Lon1,Lon2,Lon3,Lon4,Lon5]
WH
3. The variation in surface luminance , δ WHITE is defined as :
LM240WU7
Liquid Crystal Display
pixels white all with Luminance Surface
pixels black all with Luminance Surface
2
)L .. ,L,Minimum(L
P9P2P1
×
100
)L .... ,L ,(L Maximum
P9P2P1
y
9
++−
yx
3122
u’1, v’1 : u’v’ value at viewing angle direction
u’2, v’2 : u’v’ value at front (θ=0)
=
δ
WHITE
Where L1to L9 are the luminance with all pixels displaying white at 9 locations.
For more information see FIG 4.
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 5.
5. Gray to gray response time is the time required for the display to transition from gray to gray.
For additional information see Table 9.
6. Color shift is the angle at which the color difference is lower than 0.04.
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For more information see FIG 6.
-Color difference (Δu’v’)
x
u
'
=
-Pattern size : 25% Box size
-Viewing angle direction of color shift : Horizontal, Vertical
4
++−
yx
3122
2
21
…
v
'
=
)''()''('' vvuuvu −+−=∆
21
7. 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 7.
8. Effective viewing angle is the angle at which the gamma shift of gray scale is lower than 0.3.
For more information see FIG 8 and FIG 9.
9. Gray scale specification
Gamma Value is approximately 2.2. For more information see Table 10.
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Liquid Crystal Display
Product Specification
Measuring point for surface luminance & measuring point for luminance variation.
H
H/2
●
V/2
V
V/10
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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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P2
●
P5
●
P7
[ FIG 4 ] Measure Point for Luminance
●
●
●
P3
P1
P8
●
●
●
H/10
P4
P6
P9
H : 518.4 mm
V : 324.0 mm
TrR
100
90
Optical
Response
10
0
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black
[ FIG 5 ] Response Time
white
TrD
black
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LM240WU7
Liquid Crystal Display
Product Specification
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
-TGTG_AVR is the total average time at rising time and falling time for “Gray To Gray”.
-TGTG_MAX 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
Color shift is defined as the following test pattern and color.
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Average RGB values in Bruce RGB for Macbeth Chart
G127
G63
G0
[ FIG 6 ] Color Shift Test Pattern
Rising Time
G0G63G127G191G255
25% Box size
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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Liquid Crystal Display
Product Specification
Dimension of viewing angle range.
Normal
φ
= 180°, Left
φ
= 270°, Down
[ FIG 7 ] Viewing angle
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θ
E
φ
Y
φ
= 90°, Up
φ
= 0°, Right
[ FIG 8 ] 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. 9)
Ver. 1.0 Apr. 3 . 2009
[ FIG 9 ] Sample Log-log plot of
luminance vs. gray scale
b
+=−
)log()log()log( aVrLL
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LM240WU7
Liquid Crystal Display
Product Specification
Table 10. Gray Scale Specification
Relative Luminance [%] (Typ.)Gray Level
0.130
31
63
95
127
159
191
223
255
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1.2
4.7
11.7
21.2
35.2
53.0
75.4
100
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LM240WU7
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.
546.4mmHorizontal
Outline Dimension
Bezel Area
Active Display Area
2830 g(Typ) / 2970 g(Max)Weight
Surface Treatment
Notes : Please refer to a mechanic drawing in terms of toleranceat the next page.
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Hard coating(3H)
Anti-glare treatment of the front polarizer
352.0mmVertical
35.7mmDepth
522.4mmHorizontal
328.0mmVertical
518.4mmHorizontal
324.0mmVertical
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Liquid Crystal Display
Product Specification
<FRONT VIEW>
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LM240WU7
Liquid Crystal Display
Product Specification
<REAR VIEW>
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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
8
9
Vibration test
(non-operating)
Shock test
(non-operating)
Humidity condition Operation7
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Altitude
storage / shipment
Maximum Storage Humidity for
4 corner light leakage Mura.
Vibration level : 1.0G RMS
Bandwidth : 10-300Hz
Duration : X,Y,Z, 10 min
One time each direction
Shock level : 100G
Waveform : half sine wave, 2ms
Direction : ±X, ±Y, ±Z
One time each direction
Ta= 40 °C ,90%RH
0 -40,000 feet(12192m)
Max 70%RH , Ta=40℃
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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 1stEd. April 1, 2003, Canadian Standards Association,
Standard for Safety of Information Technology Equipment.
c) EN 60950-1:2001, First Edition,
European Committee for ElectrotechnicalStandardization(CENELEC)
European Standard for Safety of Information Technology Equipment.
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
Technology Equipment.“ European Committee for ElectrotechnicalStandardization.(CENELEC), 1998
( Including A1: 2000 )
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7-3. Environment
a) RoHS. Directive 2002/95/EC of the European Parliament and of the Council on the reduction of the
use of certain hazardous substances in electrical and electronic equipment. January 2003
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LM240WU7
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
b) Location of Lot Mark
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Serial No. is printed on the label. The label is attached to thebackside of the LCD module.
This is subject to change without prior notice.
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200320022001
321
200452005
4
Apr5May
4
2006720078200892009
6
Jun
Jul8Aug9Sep
6
7
2010
0
Oct
A
Nov
B
DecMarFebJan
C321
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Liquid Crystal Display
Product Specification
8-2. Packing Form
a) Package quantity in one box : 5EA
b) Box Size : 436 X 346 X 628
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Product Specification
8-3. Pallet Form
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MATERIALDESCRIPTIONNO.
PACKING ASS’Y1
PALLET2
TAPE5
BAND6
BAND, CLIP7
Paper_1030X870X130
SWR4ANGLE, PACKING3
YUPO PAPERLABEL4
OPP
PP
CLIP 18MM
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Product Specification
9. PRECAUTIONS
Please pay attention to the followings when you use this TFT LCDmodule.
9-1. MOUNTING PRECAUTIONS
(1) You must mount a module using holes arranged in four cornersor 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 polarizerswith 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 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 lower 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, smearor 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 afatal blow)
(9)Please do not set LCD on its edge.
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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 thebezel 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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