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LM230WF1
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
() Preliminary Specification
( ) Final Specification
BUYER
MODEL
APPROVED BY
/
/
FSC
SIGNATURE
DATE
23” Full HD TFT LCDTitle
LG. Display Co., Ltd.SUPPLIER
LM230WF1*MODEL
TLA1SUFFIX
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
H.S. Kim / G.Manager
REVIEWED BY
D.I. Chung / Manager
SIGNATURE
DATE
PREPARED BY
/
Please return 1 copy for your confirmation with
your signature and comments.
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LM230WF1
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
OPTICAL SFECIFICATIONS4
MECHANICAL CHARACTERISTICS5
RELIABLITY6
1
2
3
4
5
6
6
8
12
13
14
15
17
23
26
INTERNATIONAL STANDARDS7
SAFETY7-1
EMC7-2
PACKING8
DESIGNATION OF LOT MARK8-1
PACKING FORM8-2
PRECAUTIONS9
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LM230WF1
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision No
Revision
Date
DescriptionPage
First Draft(Preliminary)-July.04.20080.0
16July.15.20080.1
Max Frequency is 87.5Mhz, Min Frequency is 60Mhz and Min H total
is 1000
Mechanical drawing is updated. Cover shied27
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1. General Description
LM230WF1 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive type display operating in the normally White mode. It has a 23 inch diagonally measured
active display area with Full HD resolution (1080 vertical by 1920 horizontal pixel array)
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes.
Gray scale or the brightness of the sub-pixel color is determined with a 8-bit gray scale signal for each dot,
thus, presenting a palette of more than 16,7M colors with A-FRC(Advanced Frame Rate Control).
It has 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.
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LM230WF1
Liquid Crystal Display
Product Specification
RGB, Dclk, DE
Hsync, Vsync
(LVDS 2 port)
V
(+5V)
LCD
V
Lamp
V
Lamp
CN1
(30pin)
General Features
CN2, 3(2PIN)
CN4, 5(2PIN)
23 inches(58.42cm) diagonalActive Screen Size
533.2(H) x 312.0(V) x 16.5(D) mm(Typ.)Outline Dimension
0.266 mm x 0.266 mmPixel Pitch
TimingControl
Block
PowerCircuit Block
Figure 1. Block diagram
Source Driver Circuit
S1920S1
Gate Driver circuit
G1
TFT-LCD Panel
(1680 × 1050pixels)
G1080
Backlight Assembly(4 CCFL)
1920 horiz. By 1080 vert. Pixels RGB stripes arrangementPixel Format
8-bit with A-FRC, 16,777,216 colorsColor Depth
300 cd/m
2
(Center 1 point)Luminance, White
View Angle Free (R/L 170(Typ.), U/D 160(Typ.))Viewing Angle(CR>10)
Total 30.25 Watt (Typ.) ( 4.75 Watt @VLCD, 25.5 Watt @300cd/])Power Consumption
2600g(typ.)Weight
Transmissive mode, normally WhiteDisplay Operating Mode
Surface Treatment
Hard coating(3H) & Anti-Glare treatment of the front polarizer
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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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LM230WF1
Liquid Crystal Display
Product Specification
Parameter Notes
Symbol
Values
MaxMin
Units
Power Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity
500TOP
60-20TST
C
C
%RH9010HOP
%RH9010HST
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.
ڔڋڀ
ڑڋ
ڑڋڀ
ڏڋ
ڐڋ
ڏڋڀ
ڣېۈۄڿۄۏ۔ ڶڃڀڄڭڣڸ
ڌڋڀ
ڲۀۏ ڝېۇڽ
گۀۈۋۀۍڼۏېۍۀ ڶڞڸ
ڎڋ
ڍڋ
ڌڋ
ڋ
at 25 ± 2CVdc5.54.5VLCD
1
ڮۏۊۍڼۂۀ
ڪۋۀۍڼۏۄۊۉ
ڌڋ ڍڋ ڎڋ ڏڋ ڐڋ ڑڋ ڒڋ ړڋڋڈڍڋ
ڟۍ۔ ڝېۇڽ گۀۈۋۀۍڼۏېۍۀ ڶڞڸ
Figure 2. Temperature and relative humidity
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3. Electrical Specifications
3-1. Electrical Characteristics
It requires two power inputs. One is employed to power the LCD electronics and to drive the TFT array and
liquid crystal. The second input power for the CCFL, is typically generated by an inverter. The inverter is an
external unit to the LCDs.
Table 2-1. ELECTRICAL CHARACTERISTICS
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LM230WF1
Liquid Crystal Display
Product Specification
Parameter Symbol
MODULE :
VLCDPower Supply Input Voltage
Differential Impedance
-
ILCDPower Supply Input Current
-
-Pc TYP
Power Consumption
-PcMAX
Values
MaxTypMin
5.554.5
Vdc
Ohm11010090Zm
1064950
14001250
5.2254.75
6.8756.25
Note :
1. Permissive power ripple should be measured under VCC=5.0V, 25C, fV(frame frequency)=MAX
condition and At that time, we recommend the bandwidth configuration of oscilloscope is to be under
20Mhz. See the next page.
NotesUnit
1mVp-p400VdRFPermissive Power Input Ripple
2mA
3mA
2Watt
3Watt
4A3.0--IRUSHRush current
2. The specified current and power consumption are under the V
=5.0V, 25 ± 2C,fV=60Hz condition
LCD
whereas Mosaic and max power pattern shown in the [ Figure 3 ] is displayed.
3. The current is specified at the maximum current pattern.
4. Maximum Condition of Inrush current :
The duration of rush current is about 2ms and rising time of Input Voltage is 1ms(min.).
At any rising time of Input voltage, Keep the I2T Value by below Condition
Condition : I2T < 32*2ms
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• Permissive Power input ripple (VCC=5.0V, 25C, fV(frame frequency)=MAX condition)
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LM230WF1
Liquid Crystal Display
Product Specification
White pattern
• Power consumption (VCC=5.0V, 25C, fV (frame frequency=60Hz condition)
Typical power Pattern
Figure 3. Mosaic pattern & Black Pattern for power consumption measurement
Black pattern
Max power Pattern
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Table 2_2. ELECTRICAL CHARACTERISTICS
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LM230WF1
Liquid Crystal Display
Product Specification
Values
MaxTypMin
1000 (3.0mA)850 (7.5mA)830(8.0mA)
8.07.53.0
1500
1800
706040
3
28.125.5
RMS
RMS
V
RMS
V
RMS
LAMP :
Life Time
Parameter Symbol
VBLOperating Voltage
IBLOperating Current
at 25 C
at 0 C
fBLOperating Frequency
TsDischarge Stabilization Time
PBLPower Consumption
50000
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 from high-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.
Do not attach a conducting tape to lamp connecting wire.
If the lamp wire attach to a conducting tape, TFT-LCD Module has a low luminance and the inverter
has abnormal action. Because leakage current is occurred between lamp wire and conducting tape.
NotesUnit
1, 2V
1mA
1, 3VsEstablished Starting Voltage
4kHz
1, 5Min
6Watt
1, 7Hrs
1. Specified values are for a single lamp.
2. Operating voltage is measured at 25 ± 2C. The variance of the voltage is ± 10%.
3. The voltage above V
should be applied to the lamps for more than 1 second for start-up.
S
(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.
4. 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.
5. Let’s define the brightness of the lamp after being lighted for 5 minutes as 100%.
T
is the time required for the brightness of the center of the lamp to be not less than 95%.
S
6. The lamp power consumption shown above does not include loss of external inverter.
The used lamp current is the lamp typical current. (P
= VBLx IBLx N
BL
Lamp
)
7. 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 ± 2C.
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8. The output of the inverter must have symmetrical(negative and 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.
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%.
* Inverter output waveform had better be more similar to ideal sine wave.
I p
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Product Specification
* Asymmetry rate:
|I
– I–p|/ I
p
x100%
rms
LM230WF1
Liquid Crystal Display
I -p
* Distortion rate
(or I–p)/ I
I
p
rms
9. 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 of biased mercury as time goes.
10.In case of edgy type back light with over 4 parallel lamps, input current and voltage wave form should
be synchronized
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3-2. Interface Connections
This LCD employs Two interface connections, a 30 pin connector is used for the module electronics and a
14Pin Connector is used for the integral backlight system.
3-2-1. LCD Module
- LCD Connector(CN1): KDF71G-30S-1H, (Manufactured by Hirose )
- Mating Connector : FI-X30C2L (Manufactured by JAE) or Equivalent
Table 3 MODULE CONNECTOR(CN1) PIN CONFIGURATION
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LM230WF1
Liquid Crystal Display
Product Specification
1
2
3
4
5
6
7
8
9
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;ΚΟΦΤΤΚΘΟΒΝ ΠΗ ΖΧΖΟ ΔΝΠΔΜ ΔΙΒΟΟΖΝ ͽ·͵΄
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ΣΠΦΟΕ
ͿΠ ʹΠΟΟΖΔΥΚΠΟ
ͿΠ ʹΠΟΟΖΔΥΚΠΟ
ͷΠΣ ʹΠΟΥΣΠΝ ͳΦΣΤΥ ΗΣΖΦΖΟΔΪ ΠΗ ͺΟΧΖΣΥΖΣ
ΠΨΖΣ ΄ΦΡΡΝΪ ·
ΠΨΖΣ ΄ΦΡΡΝΪ ·
ΠΨΖΣ ΄ΦΡΡΝΪ ·
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 V
LCD (power input) pins should be connected together.
3. Input Level of LVDS signal is based on the IEA 664 Standard.
Rear view of LCM
#1 #30
#1 #30
KDF71G-30S-1H
[ Figure 4 ] Connector diagram
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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 DW N
5 Ground pin for TTLGND 33 Ground pin for PLLPLL GND
6 TTL Input (G1)D8 34 Power Supply for PLLPLL VCC
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LM230WF1
Liquid Crystal Display
Product Specification
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
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
46 Negative LVDS differential data output 1TXOUT118 TTL Input (B7)D17
19 TTL Input (B1)D18
20 TTL Input (B2)D19
22 TTL Input (B3)D20
23 TTL Input (B4)D21
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
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
Notes : Refer to LVDS Transmitter Data Sheet for detail descriptions.
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LVDS Input characteristics
1. DC Specification
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LM230WF1
Liquid Crystal Display
Product Specification
LVDS Common mode Voltage
LVDS Input Voltage Range
2. AC Specificat ion
LVDS Clock to Data Skew Margin
LVDS Clock to Clock Skew Margin (Even to Odd)
Maximum deviation
of input clock frequency during SSC
|LVDS Differential Voltage
ID
CM
IN
SKEW
SKEW
SKEW_EO
DEV
- 600
-1/7
NotesUnitMaxMinSymbolDescription
-mV600100|V
-V1.80.6V
-V2.10.3V
NotesUnitMaxMinSymbolDescription
85MHz > Fclk 65MHzps+400- 400t
ps+600t
65MHz > Fclk 25MHz
+1/7t
T
clk
% 3-F
-
-
Maximum modulation frequency
of input clock during SSC
MOD
KHz200-F
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Freq.
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LM230WF1
Liquid Crystal Display
Product Specification
< Clock skew margin between channel >
F
max
F
center
F
min
3. Data Format
1) LVDS 2 Port
X
m
tvk
< Spread Spectrum >
m
QGm
Time
kl}
< LVDS Data Format >
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2) LVDS 1 Port
RCLK+
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LM230WF1
Liquid Crystal Display
Product Specification
RA+/-
RB+/-
RC+/-
RD+/-
R3 R2
G4 G3
B5 B4
G7 G6
Pr evi ous (N -1 )th Cyc le Next (N+1)th Cycle
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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Table 5. BACKLIGHT CONNECTOR PIN CONFIGURATION(CN2,CN3,CN4,CN5)
The backlight interface connector is a model 35001HS-02LD manufactured by Yeonho. The mating
connector part number are 35001WR-02L or equivalent. The pin configuration for the connector is shown in
the table below.
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LM230WF1
Liquid Crystal Display
Product Specification
Pin
1
2
ͿΠΥΖ ΅ΙΖ ΙΚΘΙΧΠΝΥΒΘΖ ΡΠΨΖΣ ΥΖΣΞΚΟΒΝ ΚΤ ΔΠΝΠΣΖΕ ΈΙΚΥΖ ΚΟΜ
Up Side
Down Side
Symbol
HV
LV
΅ΙΖ ΝΠΨΧΠΝΥΒΘΖ ΡΚΟ ΔΠΝΠΣ ΚΤ ΈΙΚΥΖ ͳΝΦΖ
΅ΙΖ ΓΒΔΜΝΚΘΙΥ ΘΣΠΦΟΕ ΤΙΠΦΝΕ ΓΖ ΔΠΞΞΠΟ ΨΚΥΙ ͽʹ͵ ΞΖΥΒΝ ΗΣΒΞΖ.
3. 35001HS-02LD (Locking type)
Lamp1
Lamp2
Lamp3
Description
High Voltage for Lamp
Low Voltage for Lamp
NOTES
1
1, 2
CN2
CN3
CN4
Lamp4
[ Figure 5 ] Backlight connector diagram
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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
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LM230WF1
Liquid Crystal Display
Product Specification
NoteUnitMaxTypMinSymbolITEM
DCLK
Hsync
Vsync
tCLKPeriod
-Frequency
tHPPeriod
tHVHorizontal Valid
tHBHorizontal Blank
fHFrequency
tWHWidth
tHBPHorizontal Back Porch
tHFPHorizontal Front Porch
tVPPeriod
tVVVertical Valid
tVBVertical Blank
fVFrequency
tWVWidth
16012840
836664
644816
484816
ns15.3813.8911.76
MHz87.57260
tCLK112010881000
tCLK960960960
KHz
tCLK48328
tHP116011001090
tHP108010801080
tHP802010
Hz756050
tHP1642
5
tVBPVertical Back Porch
tVFPVertical Front Porch
3285
3283
Note: Hsync period and Hsync width-active should be even number times of tCLK. If the value is odd number
times of t
CLK, 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(4).
4. The polarity of Hsync, Vsync is not restricted.
5, The Max frequency of 1920X1080 resoution is 82.5Mhz
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3-4. Signal Timing Waveforms
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LM230WF1
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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
t
HFP
DE(Data Enable)
t
VP
t
WV
Vsync
t
VBP
t
VV
t
VFP
DE(Data Enable)
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3-5. Color Data Reference
The Brightness of each primary color(red,green,blue) is based on the 8-bit gray scale data input for the color;
the higher the binary input, the brighter the color. The table below provides a reference for color versus data
input.
Table 6. COLOR DATA REFERENCE
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LM230WF1
Liquid Crystal Display
Product Specification
Input Color Data
Basic
Color
RED
Color
Black 0000000 00000000 00000000 0
Red (255)
Green (255)
Blue (255)
Cyan
Magenta
Yellow
White
MSB LSB
RED
GREEN
MSB LSB
BLUE
MSB LSB
B7 B6 B5 B4 B3 B2 B1 B0G7 G6 G5 G4 G3 G2 G1 G0R7 R6 R5 R4 R3 R2 R1 R0
0000000 00000000 01111111 1
0000000 01111111 10000000 0
1111111 10000000 00000000 0
1111111 11111111 10000000 0
1111111 10000000 01111111 1
0000000 01111111 11111111 1
1111111 11111111 11111111 1
0000000 00000000 00000000 0RED (000) Dark
0000000 00000000 00000000 1RED (001)
............
0000000 00000000 01111111 0RED (254)
0000000 00000000 01111111 1RED (255)
0000000 00000000 00000000 0GREEN (000) Dark
0000000 00000000 10000000 0GREEN (001)
GREEN
0000000 01111111 00000000 0GREEN (254)
0000000 01111111 10000000 0GREEN (255)
BLUE (000) Dark
0000000 00000000 00000000 0
0000000 10000000 00000000 0BLUE (001)
BLUE
1111111 00000000 00000000 0BLUE (254)
1111111 10000000 00000000 0BLUE (255)
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3-6. Power Sequence
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LM230WF1
Liquid Crystal Display
Product Specification
90% 90%
Power supply for LCD
Vcc
Interface signal
V
I
Power for LAMP
Table 7. POWER SEQUENCE
Parameter
10%
T2 T5 T7
T1
Valid data
0V
T3
T4
Lamp on
OFF
Values
10%
OFF
Units
MaxTypMin
--200T4
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 for LCD and interface signal are valid.
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ms10-0.5T1
ms50-0.01T2
ms--500T3
ms
ms50-0.01T5
ms-500T7
to 0V.
LCD
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LM230WF1
Liquid Crystal Display
Product Specification
3-7. V
LCD
The V
1) Dip condition
Power Dip Condition
dip condition is caused by the PWM IC initialization.
LCD
t
d
3.5V
V
LCD
4.5V
2) V
3.5V V
3.5V
LCD
-dip conditions should also follow the Power On/Off conditions for supply voltage.
V
LCD
4.5V , td20ms
LCD
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4. Optical Specifications
Optical characteristics are determined after the unit has been ‘ON’ for approximately 30 minutes
in a dark environment at 252C. The values specified are at an approximate distance 50cm from the LCD
surface at a viewing angle of Φ and θ equal to 0 and aperture 1 degree.
FIG. 6 presents additional information concerning the measurement equipment and method.
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LM230WF1
Liquid Crystal Display
Product Specification
Optical Stage(x,y)
LCD Module
50cm
FIGURE. 6 Optical Characteristic Measurement Equipment and Method
Table 8. OPTICAL CHARACTERISTICS (Ta=25 C, V
SymbolParameter
Surface Luminance, white
Luminance Variation
Response Time
Color Coordinates
[CIE1931]
Viewing Angle (CR>10)
xaxis,right(φ=0)
xaxis,left (φ=180)
yaxis,up (φ=90)
y axis, down (φ=270)
Rise Time
Decay Time
RED
GREEN
BLUE
WHITE
WHITE
WH
9P
R
D
Rx
Typ
-0.03
Pritchard 880 or
equivalent
=TBDV, fV=60Hz Dclk=144MHz, IBL=7.5mA)
LCD
Values
0.644
0.336Ry
0.295Gx
0.614Gy
0.146Bx
0.072By
0.313Wx
0.329Wy
8570θl
7560θu
8570θd
2.2
MaxTypMin
-1000600CRContrast Ratio
-300250L
Typ
+0.03
Units
Notes
1
2
2cd/m
3%75δ
4ms31-Tr
4ms74-Tr
5Degree8570θr
5--Gray Scale (Gamma)
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δ
Notes 1. Contrast Ratio(CR) is defined mathematically as :
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LM230WF1
Liquid Crystal Display
Product Specification
Contrast Ratio =
2. Surface luminance 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 6.
3. The variation in surface luminance , δ
δ
WHITE
Measuring point for surface luminance & measuring point for luminance variation
B
Surface Luminance with all white pixels
Surface Luminance with all black pixels
WHITE is defined as :
=
23
…
H
A
)L..,L,Minimum(L
on9on2on1
×
)L....,L,(LMaximum
on9on2on1
(%)100
4
H/10
V
V/10
A:H/4mm
B:V/4mm
@ H,V : Active Area
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5
78
[ FIGURE 7 ] Measure Point for Luminance
1
6
9
Active Area
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4. The response time is defined as the following figure and shall be measured by switching
the input signal for “black” and “white”.
Response time is the time required for the display to transition from white to black (Rise Time,
T
rR) and from black to white (Decay Time, TrD).
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LM230WF1
Liquid Crystal Display
Product Specification
%
Tr
R
Tr
D
100
90
Optical
white black white
response
10
0
[ FIGURE 8] Response Time
5. Viewing angle is the angle at which the contrast ratio is greater than 10 or 5. 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. 9 .
<Dimension of viewing angle range>
φ
= 180°,Left
Normal
θ
E
Y
φ
=90°,Up
φ
φ
= 0°,Right
φ
= 270°, Down
[ FIGURE 9 ] Viewing angle
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6, Gray scale specification
Gamma Value is approximately 2.2. For more information see Table 9
Table 9. Gray Scale Specification
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LM230WF1
Liquid Crystal Display
Product Specification
Relative Luminance [%] (Typ.)Gray Level
0.10
31
63
95
127
159
191
223
255
1.2
4.7
11.7
21.2
35.2
53.0
75.4
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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LM230WF1
Liquid Crystal Display
Product Specification
533.2mmHorizontal
Outline Dimension
Bezel Area
Active Display Area
Typ : 2600 g , Max : 2750 gWeight
Surface Treatment
Hard coating(3H)
Anti-glare treatment of the front polarizer
Notes : Please refer to a mechanic drawing in terms of tolerance at the next page.
312.0mmVertical
16.5 mmDepth
513.784mmHorizontal
291.016mmVertical
509.184mmHorizontal
286.416mmVertical
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<FRONT VIEW>
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LM230WF1
Liquid Crystal Display
Product Specification
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<REAR VIEW>
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LM230WF1
Liquid Crystal Display
Product Specification
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6. Reliability
Environment test condition
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LM230WF1
Liquid Crystal Display
Product Specification
ConditionTest ItemNo
Ta= 60C 240hHigh temperature storage test1
Ta= -20C 240hLow temperature storage test2
Ta= 50C 50%RH 240hHigh temperature operation test3
Ta= 0C 240hLow temperature operation test4
Vibration test
5
(non-operating)
Shock test
6
(non-operating)
Humidity condition Operation7
Altitude
8
Maximum Storage Humidity for
9
4 corner light leakage Mura.
storage / shipment
Wave form : random
Vibration level : 1.00G RMS
Bandwidth : 10-300Hz
Duration:X,Y,Z,10min
One time each direction
Shock level : 100G
Waveform : half sine wave, 2ms
Direction : X,Y, Z
One time each direction
40 C ,90%RH
Ta=
0 - 40,000 feet(12192m)
Max 70%RH , Ta=40
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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 1
Standard for Safety of Information Technology Equipment.
c) EN 60950-1:2001, First Edition,
European Committee for Electro technical Standardization(CENELEC)
European Standard for Safety of Information Technology Equipment.
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Product Specification
st
Ed. April 1, 2003, Canadian Standards Association,
LM230WF1
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 Electro technical Standardization.(CENELEC), 1998
( Including A1: 2000 )
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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:SERIALNO.
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LM230WF1
Liquid Crystal Display
Product Specification
Note
1. YEAR
Year
Mark
321
200452005
4
200320022001
2006720078200892009
6
2. MONTH
Month
Mark
Apr5May
4
Jun
6
Jul8Aug9Sep
7
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 : 7pcs
b) Box Size : 424x328x603
2010
0
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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LM230WF1
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 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, smear or spot will occur.
(5) When fixed patterns are displayed for a long time, remnant image is likely to occur.
(6) Module has high frequency circuits. Sufficient suppression to the electromagnetic interference shall be
done by system manufacturers. Grounding and shielding methods may be important to minimized the
interference.
(7) Please do not give any mechanical and/or acoustical impact to LCM. Otherwise, LCM can’t be operated
its full characteristics perfectly.
(8) A screw which is fastened up the steels should be a machine screw.
(if not, it causes metallic foreign material and deal LCM a fatal blow)
(9) Please do not set LCD on its edge.
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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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LM230WF1
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 5Cand35C 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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