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LM240WU9
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ) Final Specification
Title 24.0" WUXGA TFT LCD
BUYER General SUPPLIER LG Display Co., Ltd.
MODEL *MODEL LM240WU9
SUFFIX SLA1
*When you obtain standard approval,
please use the above model name without suffix
SIGNATURE SIGNATURE
APPROVED BY APPROVED BY
DATE DATE
/ B. C. Kim / G. Manager
REVIEWED BY
S. H . Kim / Manager [C]
/ Y. H. Hwang / Manager [M]
M. S. Kang / Manager [P]
S. H. Han / Manager [O]
/ REPARED BY
J. H. Oh / Engineer
Please return 1 copy for your confirmation with
IT/Mobile Development Division 1
your signature and comments. LG Display Co., Ltd
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LM240WU9
Liquid Crystal Display
Product Specification
Contents
No ITEM Page
COVER 1
CONTENTS 2
RECORD OF REVISIONS 3
1 GENERAL DESCRIPTION 4
2 ABSOLUTE MAXIMUM RATINGS 5
3 ELECTRICAL SPECIFICATIONS 6
3-1 ELECTRICAL CHARACTREISTICS 6
3-2 INTERFACE CONNECTIONS 8
3-3 SIGNAL TIMING SPECIFICATIONS 13
3-4 SIGNAL TIMING WAVEFORMS 14
3-5 COLOR INPUT DATA REFERNECE 15
3-6 POWER SEQUENCE 16
3-7 POWER SEQUENCE FOR INVERTER 17
4 OPTICAL SFECIFICATIONS 18
5 MECHANICAL CHARACTERISTICS 24
6 RELIABLITY 27
7 INTERNATIONAL STANDARDS 28
7-1 SAFETY 28
7-2 EMC 28
7-3 ENVIRONMENT 28
8 PACKING 29
8-1 DESIGNATION OF LOT MARK 29
8-2 PACKING FORM 30
8-3 PALLET FORM 31
9 PRECAUTIONS 32
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LM240WU9
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision
Revision Date Page Description
No
0.0 Sep. 28. 2012 - First Draft(Preliminary)
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LM240WU9
Liquid Crystal Display
Product Specification
1. General Description
LM240WU9 is a Color Active Matrix Liquid Crystal Display with Light Emitting Diode (GB 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 24inch
diagonally measured active display area with WUXGA resolution (1200 vertical by 1920 horizontal pixel array)
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes.
Gray scale or the brightness of the sub-pixel color is determined with a 10-bit gray scale signal for each dot,
thus, presenting a palette of more than 1.07B colors with Advanced-FRC (Frame Rate Control). It has been
designed to apply the 10Bit 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.
RGB Source Driver Circuit
S1 S1920
LVDS
G1
2port
Gate Driver Circuit
CN1 Timing
(51pin)
Controller
+12.0V
TFT - LCD Panel
(1920 RGB 1200 pixels)
G1200
+12.0V
Power Circuit
Block
VG LED (4ch)
Backlight Assembly
VB LED (4ch)
General Features
Active Screen Size 24.1 inches (61.13 cm) diagonal
Outline Dimension 546.4(H) x 352.0(V) x 15.5(D) mm (Typ.)
Pixel Pitch 0.270 mm x 0.270 mm
Pixel Format 1920 horiz. By 1200 vert. Pixels RGB stripes arrangement
Color Depth 8-bit + A-FRC, 1,073,741,824 colors
Luminance, White 350 cd/m2 ( Center 1 points)
Viewing Angle(CR>10) View Angle Free (R/L 178(Typ.), U/D 178(Typ.))
Power Consumption Total 36.96 Watt (Typ.) ( 6.36 Watt @VLCD, 30.6 Watt@VDDB )
Weight 2450 g (typ.)
Display Operating Mode Transmissive mode, normally black
Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer
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LM240WU9
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
Values
Parameter Symbol Units Notes
Min Max
Power Input Voltage VLCD 8 14 Vdc at 25 r 2 C
Operating Temperature TOP 0 50 C
Storage Temperature TST -20 60 C
1, 2, 3
Operating Ambient Humidity HOP 10 90 %RH
Storage Humidity HST 10 90 %RH
LCM Surface Temperature TSurface 0 65 1, 4
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.
Note : 3. Storage condition is guaranteed under packing condition.
Note : 4. LCM surface temperature should be Min 0 and Max 65 under the VLCD=12.0V.
fV=60Hz, 25 ambient temperature no humidity control and LED string current is typical value.
90%
60
60%
50 Storage
Humidity [(%)RH]
Wet Bulb
Temperature [C]
40
40%
Operation
30
20
10
0
10%
-20 0 10 20 30 40 50 60 70 80
Dry Bulb Temperature [C]
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LM240WU9
Liquid Crystal Display
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
It requires two power inputs. One is employed to power the LCD electronics and to drive the TFT array and
liquid crystal. The second input power for the LED/Backlight, is typically generated by LED Driver.
The LED Driver is an external unit to the LCDs.
Table 2-1. ELECTRICAL CHARACTERISTICS
Values
Parameter Symbol Unit Notes
Min Typ Max
MODULE :
Power Supply Input Voltage VLCD 11.4 12.0 12.6 Vdc
Permissive Power Input Ripple VRF (400) mVp-p 1
- (531) (610) mA 2
Power Supply Input Current ILCD
- (714) (822) mA 3
PLCD TYP - (6.36) (7.32) Watt 2
Power Consumption
PLCD MAX - (8.57) (9.85) Watt 2
Rush current IRUSH - - 3.0 A 4
Note :
1. Permissive power ripple should be measured under VLCD=12.0V, 25 r 2 C,fV=60Hz condition and At that
time, we recommend the bandwidth configuration of oscilloscope is to be under 20Mhz.
2. The specified current and power consumption are under the VLCD=12.0V, 25 r 2 C,fV=60Hz condition
whereas mosaic pattern(8 x 6) is displayed and fV is 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.).
White Pattern Black Pattern
< Permissive Power Input Ripple (VLCD=12.0V, 25 r 2 C,fV=60Hz) >
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LM240WU9
Liquid Crystal Display
Product Specification
Typical current pattern
Maximum current pattern
(White : 255Gray, Black : 0Gray)
Mosaic Pattern(8 x 6) White Pattern
< Power consumption (VLCD=12.0V, 25 r 2 C,fV=60Hz) >
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LM240WU9
Liquid Crystal Display
Product Specification
Table 2-2. LED Bar ELECTRICAL CHARACTERISTICS
Values
Parameter Symbol Unit Notes
Min. Typ. Max.
I_Green 90 95 mA
LED String Current 1, 2, 7
I_Blue 55 58 mA
Blue current Ratio IB / IG 59.3 61.1 62.9 % 1,2,7,8
Vs_Green (49.3) (52.7) (56.1) V
LED String Voltage 1, 3, 7
Vs_Blue (49.3) (52.7) (56.1) V
Power Consumption PBar (30.6) (32.5) Watt 1,4,6,7
LED Life Time LED_LT 30,000 Hrs 5, 7
LED driver design guide
1) The design of the LED driver must have specifications for the LED in LCD Assembly.
The performance of the LED in LCM, for example life time or brightness, is extremely
influenced by the characteristics of the LED driver.
So all the parameters of an LED driver should be carefully designed and output current should
be Constant current control. Please control feedback current of each string individually to
compensate the current variation among the strings of LEDs.
When you design or order the LED driver, please make sure unwanted lighting caused by
the mismatch of the LED and the LED driver (no lighting, flicker, etc) never occurs.
When you confirm it, the LCD module should be operated in the same condition as installed in
your instrument.
Note :
1. Specified values are for a single LED bar.
2. The specified current is defined as the input current for a single LED string with 100% duty cycle
3. The specified voltage is input LED string and Bar voltage at typical Current 100% duty current.
4. The specified power consumption is input LED bar power consumption at typical Current
100% duty current.
5. The life is determined as the time at which luminance of the LED is 50% compared to that of
initial value at the typical LED current on condition of continuous operating at 25 r 2 C.
6. The power consumption shown above does not include loss of external driver.
The used LED bar current is the LED typical current.
The typical power consumption is calculated as
PBar = Vs(Typ.) x (I_green(Typ.)+I_blue(Typ)) x No. of strings.
The maximum power consumption is calculated as
PBar = Vs(Max.) x (I_green(Typ.)+I_blue(Typ)) x No. of strings
7. LED operating DC Forward Current must not exceed LED Max Ratings at 25 2 C
8. Blue current Ratio is calculated with IB(typ.)/IG(typ.) after 30min. aging time at 25 2 C.
It means the Blue current portion comparing with Green current at 100% duty typical current.
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LM240WU9
Liquid Crystal Display
Product Specification
3-2. Interface Connections
3-2-1. LCD Module
- LCD Connector(CN1). : FI-RE51S-HF (Manufactured by JAE) or equivalent
- Mating Connector: FI-RE51HL (Manufactured by JAE) or equivalent
Table 3 MODULE CONNECTOR(CN1) PIN CONFIGURATION
No Symbol Description No Symbol Description
1 GND Ground 27 GND Ground
2 NC Reserved 28 RE0N SECOND CHANNEL 0-
ODC ON/OFF Control
3 ODC ON (H:ODC OFF, L:ODC ON) 29 RE0P SECOND CHANNEL 0+
4 NC (I2C DATA Interface) 30 RE1N SECOND CHANNEL 1-
5 NC (I2C CLK Interface) 31 RE1P SECOND CHANNEL 1+
6 NC Reserved 32 RE2N SECOND CHANNEL 2-
7 NC Reserved 33 RE2P SECOND CHANNEL 2+
8 GND Ground 34 GND Ground
9 NC NC 35 RECLKN SECOND CLOCK CHANNEL C-
10 GND Ground 36 RECLKP SECOND CLOCK CHANNEL C+
11 GND Ground 37 GND Ground
12 RO0N FIRST CHANNEL 0- 38 RE3N SECOND CHANNEL 3-
13 RO0P FIRST CHANNEL 0+ 39 RE3P SECOND CHANNEL 3+
14 RO1N FIRST CHANNEL 1- 40 RE4N SECOND CHANNEL 4-
15 RO1P FIRST CHANNEL 1+ 41 RE4P SECOND CHANNEL 4+
16 RO2N FIRST CHANNEL 2- 42 GND Ground
17 RO2P FIRST CHANNEL 2+ 43 GND Ground
18 GND Ground 44 GND Ground
19 ROCLKN FIRST CLOCK CHANNEL C- 45 GND Ground
20 ROCLKP FIRST CLOCK CHANNEL C+ 46 NC NC
21 GND Ground 47 NC NC
22 RO3N FIRST CHANNEL 3- 48 VLCD Power Supply +12.0V
23 RO3P FIRST CHANNEL 3+ 49 VLCD Power Supply +12.0V
24 RO4N FIRST CHANNEL 4- 50 VLCD Power Supply +12.0V
25 RO4P FIRST CHANNEL 4+ 51 VLCD Power Supply +12.0V
26 GND Ground - - -
Note : 1. All GND(ground) pins should be connected together and 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 #51
#1 #51
Rear view of LCM
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LM240WU9
Liquid Crystal Display
Product Specification
Table 4. REQUIRED SIGNAL ASSIGNMENT FOR LVDS TRANSMITTER
Host System THC63LVD103
30 Bit or Compatible Timing
RED0 33 Controller
RED1 34 FI-RE51S-HF
RED2 35
RED3 36
31
RED4 37 TA- 12 RO0N
30 100
RED5 38 TA+ 13 RO0P
RED6 59
RED7 61 29
TB- 14 RO1N
RED8 4 28 100
RED9 5 TB+ 15 RO1P
GREEN0 40
25
GREEN1 41 TC- 16 RO2N
GREEN2 42 24 100
TC+ 17 RO2P
GREEN3 44
GREEN4 45 23
TCLK- 19 ROCLKN
GREEN5 46 22
TCLK+ 20 100 ROCLKP
GREEN6 62
GREEN7 63
GREEN8 6 21
TD- 22 RO3N
GREEN9 8 20 100
TD+ 23 RO3P
BLUE0 48
BLUE1 49 19
BLUE2 50 TE- 24 RO4N
18 100
BLUE3 52 TE+ 25 RO4P
BLUE4 53
BLUE5 54
BLUE6 64
BLUE7 1
BLUE8 9
BLUE9 11
Hsync 55
LCM Module
Vsync 57
Data Enable 58
CLOCK 12
Note : 1. The LCD module uses a 100 Ohm[] resistor between positive and negative lines of each receiver
input.
2. Refer to LVDS Transmitter Data Sheet for detail descriptions. (THC63LVD103 or Compatible)
3. `9' means MSB and `0' means LSB at R,G,B pixel data.
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LM240WU9
Liquid Crystal Display
Product Specification
LVDS Input characteristics
1. DC Specification
LVDS -
|VID|
LVDS +
VCM VIN_MAX VIN_MIN
# |VID| = |(LVDS+) (LVDS-)|
# VCM = {(LVDS+) + (LVDS-)}/2
0V
Description Symbol Min Max Unit Notes
LVDS Differential Voltage |VID| 200 600 mV -
LVDS Common mode Voltage VCM 1.0 1.5 V -
LVDS Input Voltage Range VIN 0.7 1.8 V -
2. AC Specification
T clk
LVDS Clock
LVDS Data
t SKEW ( F clk = 1/T clk )
1) 95 MHz > Fclk 85 MHz : - 300 ~ +300
t SKEW
2) 85 MHz > Fclk 65 MHz : - 400 ~ +400
3) 65 MHz > Fclk 30 MHz : - 600 ~ +600
Description Symbol Min Max Unit Notes
tSKEW - 300 + 300 ps 95MHz > Fclk 85MHz
LVDS Clock to Data Skew Margin tSKEW - 400 + 400 ps 85MHz > Fclk 65MHz
tSKEW - 600 + 600 ps 65MHz > Fclk 30MHz
LVDS Clock to Clock Skew Margin
tSKEW_EO - 1/7 + 1/7 Tclk -
(Even to Odd)
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LM240WU9
Liquid Crystal Display
Product Specification
tSKEW_EO
LVDS Odd Clock
Tclk
LVDS Even Clock
Tclk
LVDS Even Data
< Clock skew margin between channel >
3. Data Format
< LVDS Data Format >
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LM240WU9
Liquid Crystal Display
Product Specification
3-2-2. Backlight Connector Pin Configuration(CN2)
- LED Connector : H401K-D12N-12B (Manufactured by E&T)
- Mating Connector : 4530K-F12N-01R (Manufactured by E&T) or Equivalent.
Table 3-3. LED CONNECTOR PIN CONFIGULATION
Pin No. Symbol Description Note
1 G_1- Green LED channel 1 Cathode
2 G_2- Green LED channel 2 Cathode
3 G_+ Green Common Anode
4 B_+ Blue Common Anode
5 B_1- Blue LED channel 1 Cathode
6 B_2- Blue LED channel 2 Cathode
7 B_3- Blue LED channel 3 Cathode
8 B_4- Blue LED channel 4 Cathode
9 B_+ Blue Common Anode
10 G_+ Green Common Anode
11 G_3- Green LED channel 3 Cathode
12 G_4- Green LED channel 4 Cathode
Notes : 1. Green Common Anode Pin. No. 3 & 10 must be connected electrically for
stable operation.
2. Blue Common Anode Pin. No. 4 & 9 must be connected electrically for
stable operation.
#1 #12 #1 #12
[Top view ] [Side view ]
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LM240WU9
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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)
ITEM SYMBOL Min Typ Max Unit Note
Period tCLK 12.82 12.98 13.16 ns Pixel frequency
DCLK
Frequency fCLK 76 77 78 MHz : Typ. 154MHz
Period tHP 1036 1040 1044
Hsync tCLK
Width-Active tWH 16 16 16
Period tVP 1233 1235 1237 tHP
Vsync Frequency fV 58.85 59.95 61 Hz
Width-Active tWV 6 6 6 tHP
Horizontal Valid tHV 960 960 960
Horizontal Back Porch tHBP 36 40 44
tCLK
Horizontal Front Porch tHFP 20 24 28
Data Horizontal Blank - 76 80 84 tWH+ tHBP+ tHFP
Enable Vertical Valid tVV 1200 1200 1200
Vertical Back Porch tVBP 25 26 27
tHP
Vertical Front Porch tVFP 2 3 4
Vertical Blank - 33 35 37 tWV+ tVBP+ tVFP
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,
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. 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.
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LM240WU9
Liquid Crystal Display
Product Specification
3-4. Signal Timing Waveforms
0.7VDD
Hsync, Vsync, DE, DATA
0.3VDD
tCLK
0.5VDD
Dclk
VALID
INVALID INVALID
DATA
DE(Data Enable)
Data are latched at the falling edge of DCLK
tHP
Hsync tWH
tHBP tHV tHFP
DE(Data Enable)
tVP
tWV
Vsync
tVBP tVV tVFP
DE(Data Enable)
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3-5. Color Input 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 6. COLOR DATA REFERENCE
Input Color Data
RED GREEN BLUE
Color
MSB LSB MSB LSB MSB LSB
R9 R8 R7 R6 R5 R4 R3 R2 R1 R0 G9 G8 G7 G6 G5 G4 G3 G2 G1 G0 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Black 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Red (1023) 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Green (1023) 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0
Basic Blue (1023) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1
Color Cyan 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Magenta 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1
Yellow 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0
White 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
RED (000) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (001) 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RED ... ... ... ...
RED (1022) 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (1023) 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (000) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (001) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0
GREEN ... ... ... ...
GREEN (1022) 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0
GREEN (1023) 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0
BLUE (000) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
BLUE (001) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
BLUE ... ... ... ...
BLUE (1022) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 0
BLUE (1023) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1
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Product Specification
3-6. Power Sequence
VLCD
90% 90%
10% 10%
Power Supply, VLCD 0V
T1 T6
T2 T5 T7
Valid Data
Interface Signal, Vi
(Digital RGB signal,
0V
SCDT ,Vsync, Hsync, DE,
Clock to PanelLink
Transmitter) T3 T4
LED OFF LED ON LED OFF
Power Supply for Backlight
Table 7. POWER SEQUENCE
Values
Parameter Units
Min Typ Max
T1 0.5 - 10 ms
T2 0.5 - 50 ms
T3 500 - - ms
T4 200 - - ms
T5 0.01 - 50 ms
T7 1000 - ms
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 LCDto 0V.
3. LED power must be turn on after power supply for LCD and interface signal are valid.
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3-7. VLCD Power Dip Condition
VLCD
11.4V
10.4V
td
FIG.6 Power dip condition
1) Dip condition
10.4V VLCD 11.4V , td20ms
2) VLCD 10.4V
VLCD-dip conditions should also follow the Power On/Off conditions for supply voltage.
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LM240WU9
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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 from the LCD
surface at a viewing angle of ) and T equal to 0 and aperture 1 degree.
FIG. 1 presents additional information concerning the measurement equipment and method.
Table 9. OPTICAL CHARACTERISTICS
(Ta=25 C, VLCD=12.0V, fV=60Hz Dclk=154MHz IBL=G90mA/B55mA)
Values
Parameter Symbol Units Notes
Min Typ Max
Contrast Ratio CR 700 1000 1
Surface Luminance, white LWH 280 350 cd/m2 2
Luminance Variation G WHITE 75 % 3
Response Time Gray to Gray TGTG_AVR - 6 12 ms 4
Rx (0.680)
RED
Ry (0.310)
Gx (0.210)
GREEN
Color Coordinates Gy Typ (0.700) Typ
[CIE1931] Bx -0.03 (0.147) +0.03
BLUE
By (0.054)
Wx (0.313)
WHITE
Wy (0.329)
Ru' (0.507)
RED
Rv' (0.521)
Gu' (0.077)
GREEN
Color Coordinates Gv' (0.573)
- -
[CIE1976] Bu' (0.175)
BLUE
Bv' (0.145)
Wu' (0.198)
WHITE
Wv' (0.468)
Horizontal TCST_H - 178 -
Color Shift Degree 5
Vertical TCST_V - 178 -
Viewing Angle (CR>10)
Horizontal TH 170 178 -
General Degree 6
Vertical TV 170 178 -
Horizontal TGMA_H 178 -
Effective Degree 7
Vertical TGMA_V 178 -
Gray Scale 2.2 8
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LM240WU9
Liquid Crystal Display
Product Specification
Notes 1. Contrast Ratio(CR) is defined mathematically as :(By PR880)
Surface Luminance with all white pixels
Contrast Ratio
Surface Luminance with all black pixels
It is measured at center point(Location P1)
2. Surface luminance(LWH)is luminance value at 1 point(1) across the LCD surface 50cm from the
surface with all pixels displaying white. For more information see FIG 2.
3. The variation in surface luminance , G WHITE is defined as : (By PR880)
Minimum(LP1, L P2 , }.. L P9)
GWHITE u 100
Maximum (L P1, L P2 , .... L P9)
Where L1 to L9 are the luminance with all pixels displaying white at 9 locations.
For more information see FIG 2.
4. Gray to gray response time is the time required for the display to transition from gray to gray.
For additional information see Table 10. (By RD80)
5. Color shift is the angle at which the color difference is lower than 0.04.
For more information see FIG 3. (By EZ Contrast)
- Color difference (u'v')
4x 9y
u' v'
2 x 12 y 3 2 x 12 y 3
u'1, v'1 : u'v' value at viewing angle direction
'u ' v' (u '1 u '2 ) 2 (v'1 v'2 ) 2 u'2, v'2 : u'v' value at front (=0)
- 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 4. (By PR880)
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 5 and FIG 6.
8. Gray scale specification
Gamma Value is approximately 2.2. For more information see Table 11.
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LM240WU9
Liquid Crystal Display
Product Specification
Pritchard 880 or
LCD Module
Optical Stage(x,y) equivalent
50cm
FIG. 1 Optical Characteristic Measurement Equipment and Method
Measuring point for surface luminance & measuring point for luminance variation.
H
H/2 H/10
P2 P3 P4
V/2
V
P5 P1 P6
V/10
P7 P8 P9 H : 518.4 mm
V : 324.0 mm
FIG. 2 Measure Point for Luminance
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LM240WU9
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".
- In case of the difference in measured values due to the difference of measuring device or
program was found, correlated value will be used after discussions between both parties.
Table 10. Gray to gray response time table
Rising Time
Gray to Gray
G1023 G767 G511 G255 G0
G1023
G767
Falling Time G511
G255
G0
Color shift is defined as the following test pattern and color.
25% Box size
FIG. 3 Color Shift Test Pattern
Average RGB values in Bruce RGB for Macbeth Chart
Dark skin Light skin Blue sky Foliage Blue flower Bluish green
R 395 827 343 311 519 459
G 227 571 451 411 475 799
B 183 495 647 187 743 715
Orange Purplish blue Moderate red Purple Yellow green Orange yellow
R 879 227 847 307 643 923
G 419 279 271 159 775 651
B 99 699 351 347 235 119
Blue Green Red Yellow Magenta cyan
R 107 291 791 967 831 143
G 131 595 111 851 251 507
B 583 263 151 147 607 691
White Neutral 8 Neutral 6.5 Neutral 5 Neutral 3.5 black
R 963 827 623 443 255 91
G 963 827 623 443 255 91
B 963 827 623 443 255 91
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LM240WU9
Liquid Crystal Display
Product Specification
Dimension of viewing angle range.
Normal
E Y
I = 90 q, Up
I = 180 q, Left
T
I
I = 0 q, Right
I = 270 q, Down
FIG. 4 Viewing angle
FIG. 5 Sample Luminance vs. gray scale FIG. 6 Sample Log-log plot of luminance
(using a 256 bit gray scale) vs. gray scale
L aV r Lb log( L Lb ) r log( V ) log( a)
Here the Parameter and relate the signal level V to the luminance L.
The GAMMA we calculate from the log-log representation (FIG. 6)
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LM240WU9