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1. General Description
The LP40WD2 is a Color Active Matrix Liquid Crystal Display with an integral LED 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. This TFT-LCD has 14.0 inches diagonally measured active display area with HD+
resolution (1600 horizontal by 900 vertical pixel array). Each pixel is divided into Red, Green and Blue subpixels or dots which are arranged in vertical stripes. Gray scale or the brightness of the sub-pixel color is
determined with a 6-bit gray scale signal for each dot, thus, presenting a palette of more than 262,144
colors. The LP140WD2 has been designed to apply the interface method that enables low power, high
speed, low EMI. The LP140WD2 is intended to support applications where thin thickness, low power are
critical factors and graphic displays are important. In combination with the vertical arrangement of the subpixels, the LP140WD2 characteristics provide an excellent flat display for office automation products such
as Notebook PC.
Display Operating ModeTransmissive mode, normally white
Surface TreatmentAnti-glare treatment of the front polarizer(3H)
RoHS ComplyYes
(Typ.5 point)
ڌ
ڞۃۄۋٻڪۉٻڢڼۏۀ
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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.
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LP140WD2
Liquid Crystal Display
Product Specification
Table 1. ABSOLUTE MAXIMUM RATINGS
ParameterSymbol
Power Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity
VCC-0.34.0Vdcat 25 r 5qC
TOP050qC1
HST-2060qC1
HOP1090%RH1
HST1090%RH1
Values
UnitsNotes
MinMax
Note : 1. Temperature and relative humidity range are shown in the figure below.
Wet bulb temperature should be 39
Wet Bulb
Temperature [
10
0
]
30
20
qC Max, and no condensation of water.
90% 80%
60
50
40
60%
Humidity[(%)RH]
40%
20%
10%
Storage
Operation
-20
10
20304050
6070800
Dry Bulb Temperature []
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3. Electrical Specifications
3-1. Electrical Characteristics
The LP140WD2 requires two power inputs. The first logic is employed to power the LCD electronics and to
drive the TFT array and liquid crystal. The second backlight is the input about LED BL with LED Driver.
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LP140WD2
Liquid Crystal Display
Product Specification
Table 2. ELECTRICAL CHARACTERISTICS
ParameterSymbol
UnitNotes
MinTypMax
LOGIC :
Values
Power Supply Input VoltageV
MosaicI
Power Supply Input Current
BlissI
BlackI
Power Consumption (Mosaic)P
Power Supply Inrush CurrentI
LVDS ImpedanceZ
CC3.03.33.6V1
CC-
CC-377435mA
CC-410475mA3
CC-1.21.37W2
CC_P--2000mA4
LVDS90100110
360
414 mA2
ȳ
BACKLIGHT : ( with LED Driver)
LED Power Input VoltageV
LED Power Input CurrentI
LED Power ConsumptionP
LED Power Inrush CurrentI
LED7.012.021.0V6
LED-308354mA7
LED-3.74.25W7
LED_P--2000mA8
PWM Duty Ratio1-100%9
5
PWM Jitter
PWM ImpedanceZ
PWM FrequencyF
PWM High Level VoltageV
PWM Low Level VoltageV
LED_EN ImpedanceZ
LED_EN High VoltageV
LED_EN Low VoltageV
-
PWM204060kȳ
PWM200-1000Hz11
PWM_H
PWM_L
PWM204060kȳ
LED_EN_H2.2-5.3V
LED_EN_L0-0.3V
0-0.2%10
2.2-5.3V
0-0.3V
Life Time12,000--Hrs12
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Note)
1. The measuring position is the connector of LCM and the test conditions are under 25, fv = 60Hz,
Black pattern.
2. The specified Icc current and power consumption are under
the Vcc = 3.3V , 25, fv = 60Hz condition and Mosaic pattern.
3. This Spec. is the max load condition for the cable impedance designing.
4. The below figures are the measuring Vcc condition and the Vcc control block LGD used.
The Vcc condition is same as the minimum of T1 at Power on sequence.
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LP140WD2
Liquid Crystal Display
Product Specification
Rising time
Vcc
0V
5. This impedance value is needed for proper display and measured form LVDS Tx to the mating connector.
6. The measuring position is the connector of LCM and the test conditions are under 25.
7. The current and power consumption with LED Driver are under the Vled = 12.0V , 25, Dimming of
Max luminance and White pattern with the normal frame frequency operated(60Hz).
8. The below figures are the measuring Vled condition
and the Vled control block LGD used.
VLED control block is same with Vcc control block.
90%
10%
0.5ms
3.3V
Rising time
LED
V
0V
10%
12.0V
90%
0.5ms
9. The operation of LED Driver below minimum dimming ratio may cause flickering or reliability issue.
10. If Jitter of PWM is bigger than maximum, it may induce flickering.
11. This Spec. is not effective at 100% dimming ratio as an exception because it has DC level equivalent
to 0Hz. In spite of acceptable range as defined, the PWM Frequency should be fixed and stable for
more consistent brightness control at any specific level desired.
12. The life time is determined as the time at which brightness of LCD is 50% compare to that of minimum
value specified in table 7. under general user conditionU
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3-2. Interface Connections
This LCD employs two interface connections, a 40 pin connector used for the module electronics interface and
the other connector used for the integral backlight system.
Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)
PinSymbolDescriptionNotes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
NCNo Connection
VCCLCD Logic and driver power (3.3V Typ.)
VCCLCD Logic and driver power (3.3V Typ.)
No Connection
VLEDLED Backlight Power (7V-21V)
VLEDLED Backlight Power (7V-21V)
VLEDLED Backlight Power (7V-21V)
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Product Specification
LP140WD2
Liquid Crystal Display
[Interface Chip]
1. LCD :
SiW, SW0646(LCD Controller)
Including LVDS Receiver.
2. System : SiW LVDSRx or equivalent
* Pin to Pin compatible with LVDS
[Connector]
LSMtron GT05Q-40S-H10
[Mating Connector]
Mating of IPEX 20455-040 or equivalent
[Connector pin arrangement]
[LCD Module Rear View]
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3-3. LVDS Signal Timing Specifications
3-3-1. DC Specification
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LP140WD2
Liquid Crystal Display
Product Specification
Description
LVDS Differential Voltage|V
LVDS Common mode VoltageV
LVDS Input Voltage RangeV
3-3-2. AC Specification
DescriptionSymbolMinMaxUnitNotes
LVDS Clock to Data Skew Margin
Symb
ol
|100600mV-
ID
CM
IN
t
SKEW
t
SKEW
MinMaxUnitNotes
0.61.8V-
0.32.1V-
- 400+ 400ps
- 600+ 600ps
85MHz > Fclk ˻
65MHz > Fclk ˻
65MHz
25MHz
LVDS Clock to Clock Skew Margin (Even
to Odd)
Maximum deviation
of input clock frequency during SSC
Maximum modulation frequency
of input clock during SSC
Ver. 1.0Feb. 22, 2012
t
SKEW_EO
F
DEV
F
MOD
-1/7+ 1/7T
clk
-· 3%-
-200KHz-
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Freq.
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LP140WD2
Liquid Crystal Display
Product Specification
< Clock skew margin between channel >
F
max
F
center
F
min
3-3-3. Data Format
1) LVDS 2 Port
X
m
tvk
< Spread Spectrum >
m
QGm
Time
kl}
< LVDS Data Format >
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࣪࣪࣪
3-4. Signal Timing Specifications
This is the signal timing required at the input of the User connector. All of the interface signal timing should be
satisfied with the following specifications and specifications of LVDS Tx/Rx for its proper operation.
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LP140WD2
Liquid Crystal Display
Product Specification
Table 4. TIMING TABLE
ࣿ
Period
Width
Width-Active
Period
Width
Width-Active
Horizontal back porch
Horizontal front porch
Vertical back porch
Vertical front porch
ࣿࣜ
ࣽ
ࣽ
HBP
ࣾ
ࣱࣩ࣯ࣩ࣪ࣵ
ࣲࣲ࣯࣭࣭ࣵࣵ࣬࣬࣬
ࣲࣲࣲ࣭࣭࣭
ࣴ࣬࣬ࣴ࣬࣬ࣴ࣬࣬
ࣲࣲࣲ࣯࣯ࣵࣵࣵࣵ
ࣱࣱࣱ
ࣵ࣬࣬ࣵ࣬࣬ࣵ࣬࣬
࣭࣭࣮࣭࣬࣬࣬ࣳ࣬
ࣰ࣮࣮࣮࣬ࣴ
࣮࣮ࣴࣴࣴࣴ
࣯࣯࣯
Appendix) All reliabilities are specified for timing specification based on refresh rate of 60 Hz.
Even though actual performance in 50Hz and 40Hz for low power is displayed normally,
remark and inform to user that display quality in 40 Hz and 50 Hz is out of guarantee range.
3-5. Signal Timing Waveforms
High: 0.7VCC
Condition : VCC=3.3V
࣮ࣜ
࣮ࣿࣜ
࣮ࣿࣜ
Low: 0.3VCC
t
Hsync
t
WH
t
HBP
HP
tWHA
Date Enable
t
VP
t
WV
Vsync
t
VBP
tWVA
Date Enable
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t
HFP
t
VFP
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3-6. Color Input Data Reference
The brightness of each primary color (red,green and blue) is based on the 6-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.
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3-7. Power Sequence
Power Supply Input
VCC
0V
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Product Specification
90%
LP140WD2
Liquid Crystal Display
90%
10%10%
Interface Signal, V
i
LVDS
LED BL
On/Off Control Signal
LED_EN
LED BL
Dimming Control Signal
PWM
LED Driver Input Voltage
VLED
Logic
Parameter
T
1
T
2
T
3
T
4
T
5
T
6
T
7
Min.Typ.Max.
0.5-10ms
0-50ms
0--ms
150--ms
200--ms
0--ms
0-10ms
Value
T
T
1
2
Valid Data
0V
T
5
3.0V
3.0V
0V (Off)
T
9
Valid Data
0V (Low)
T
8
90%
0V
10%
T
12
Table 6. POWER SEQUENCE TABLE
Units
LED
Parameter
T
8
T
9
T
10
T
11
T
12
T
13
T
T
3
7
T
6
T
10
T
11
90%
T
10%
13
T
4
Value
Units
Min.Typ.Max.
0--ms
0--ms
0--ms
0--ms
0.5--ms
0--ms
Note)
1. Do not insert the mating cable when system turn on.
2. Valid Data have to meet “3-3. LVDS Signal Timing Specifications”
3. LVDS, LED_EN and PWM need to be on pull-down condition on invalid status.
4. LGD recommend the rising sequence of VLED after the Vcc and valid status of LVDS turn on.
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4. Optical Specification
Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 20 minutes in
a dark environment at 25
at a viewing angle of
FIG. 1 presents additional information concerning the measurement equipment and method.
qC. The values specified are at an approximate distance 50cm from the LCD surface
) and 4 equal to 0q.
FIG. 1 Optical Characteristic Measurement Equipment and Method
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LP140WD2
Liquid Crystal Display
Product Specification
Optical Stage(x,y)
LCD Module
500mm·50mm
Equipment
Table 7. OPTICAL CHARACTERISTICS
Ta=25qC, VCC=3.3V, fV=60Hz, f
ParameterSymbol
Contrast RatioCR-400-1
Surface Luminance, whiteL
Luminance Variation
Response Time
Color Coordinates
REDRX0.5630.5880.613
GREENGX0.3070.3320.357
BLUEBX0.1300.1550.180
WHITEWX0.283
Viewing Angle5
x axis, right()=0q)4r4045-degree
x axis, left ()=180q)4l4045-degree
y axis, up ()=90q)4u1015-degree
y axis, down ()=270q)4d3035-degree
Gray Scale6
Color Gamut
WH
G
WHITE_5P
G
WHITE_13P
ࣜࣧࣜ
RY0.3250.3500.375
GY0.5330.5580.583
BY0.0980.1230.148
WY0.299
ࣿ࣫
MinTypMax
210250-cd/m
70--%
6070-%
-1625ms 4
-45-%
Values
0.313
0.329
UnitsNotes
2
0.343
0.359
CLK
= 53.9MHz
2
3
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Note)
1. Contrast Ratio(CR) is defined mathematically as
Surface Luminance with all white pixels
Contrast Ratio =
Surface Luminance with all black pixels
2. Surface luminance is the average of 5 point across the LCD surface 50cm from the surface with
all pixels displaying white. For more information see FIG 1.
= Average(L1,L2, … L5)
L
WH
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LP140WD2
Liquid Crystal Display
Product Specification
3. The variation in surface luminance , The panel total variation (
G
) is determined by measuring L
WHITE
at each test position 1 through 13 and then defined as followed numerical formula.
For more information see FIG 2.
Maximum(L
G
WHITE
=
Minimum(L
4. Response time is the time required for the display to transition from white to black (rise time, Tr
from black to white(Decay Time, Tr
). For additional information see FIG 3.
D
1,L2
1,L2
, … L13)
, … L13)
) and
R
5. 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.
6. Gray scale specification * f
= 60Hz
V
Gray LevelLuminance [%] (Typ)
L00.16
L71.05
L154.66
L2311.2
L3120.8
L3934.7
L4752.1
L5573.4
L63100
N
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FIG. 2 Luminance
<Measuring point for Average Luminance & measuring point for Luminance variation>
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Product Specification
H
A
LP140WD2
Liquid Crystal Display
D
L6
C
L2
B
V
L9
L4L5
L11L13
L7
L3
L1
Center Point
L12
L8
L10
H,V : ACTIVE AREA
A : H/4 mm
B : V/4 mm
C : 10 mm
D : 10 mm
POINTS : 13 POINTS
FIG. 3 Response Time
The response time is defined as the following figure and shall be measured by switching the input signal
for “black” and “white”.
Tr
Tr
R
D
%
100
90
Optical
Response
10
0
white
white
black
FIG. 4 Viewing angle
I
= 180
q
<Dimension of viewing angle range>
,
Left
Normal
Eye
Y
I
= 90q, Up
T
I
q
,
Right
I
= 270
q
,
Down
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= 0
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5. Mechanical Characteristics
The contents provide general mechanical characteristics for the model LP140WD2.
In addition the figures in the next page are detailed mechanical drawing of the LCD.
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LP140WD2
Liquid Crystal Display
Product Specification
Horizontal320.4r 0.5mm
Outline Dimension
Bezel Area
(Pol. Size)
Active Display Area
Weight320g (Max.)
Surface TreatmentAnti glare treatment of the front polarizer(3H)
Vertical187.1r 0.5mm
Thickness3.6mm (max)
Horizontal313.40 r 0.5mm
Vertical177.45 r 0.5mm
Horizontal309.12 mm
Vertical173.88 mm
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LP140WD2
Liquid Crystal Display
Product Specification
<FRONT VIEW>
Note) Unit:[mm], General tolerance:
r 0.5mm
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LP140WD2
Liquid Crystal Display
Product Specification
<REAR VIEW>
Note) Unit:[mm], General tolerance:
r 0.5mm
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6. Reliability
Environment test condition
No.Test ItemConditions
1High temperature storage testTa= 60qC, 240h
2Low temperature storage testTa= -20qC, 240h
3High temperature operation testTa= 50qC, 50%RH, 240h
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7. International Standards
7-1. Safety
a) UL 60950-1, Second Edition, Underwriters Laboratories Inc.
Information Technology Equipment - Safety - Part 1 : General Requirements.
b) CAN/CSA C22.2 No.60950-1-07, Second Edition, Canadian Standards Association.
Information Technology Equipment - Safety - Part 1 : General Requirements.
c) EN 60950-1:2006 + A11:2009, European Committee for Electrotechnical Standardization (CENELEC).
Information Technology Equipment - Safety - Part 1 : General Requirements.
d) IEC 60950-1:2005, Second Edition, The International Electrotechnical Commission (IEC).
Information Technology Equipment - Safety - Part 1 : General Requirements.
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LP140WD2
Liquid Crystal Display
Product Specification
7-2. EMC
a) ANSI C63.4 “American National Standard for Methods of Measurement of Radio-Noise
Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz.”
American National Standards Institute (ANSI), 2003.
b) CISPR 22 “Information technology equipment – Radio disturbance characteristics – Limit and
methods of measurement." International Special Committee on Radio Interference
(CISPR), 2005.
c) CISPR 13 “Sound and television broadcast receivers and associated equipment – Radio disturbance
characteristics – Limits and method of measurement." International Special Committee on Radio
Interference (CISPR), 2006.
7-3. Environment
a) RoHS, Directive 2002/95/EC of the European Parliament and of the council of 27 January 2003
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8. Packing
8-1. Designation of Lot Mark
a) Lot Mark
ABCDEFGHI JKLM
A,B,C : SIZE(INCH) D : YEAR
E : MONTH F ~ M : SERIAL NO.
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LP140WD2
Liquid Crystal Display
Product Specification
Note
1. YEAR
Year
Mark
2. MONTH
Month
Mark
b) Location of Lot Mark
Serial No. is printed on the label. The label is attached to the backside of the LCD module.
This is subject to change without prior notice.
8-2. Packing Form
a) Package quantity in one box : 20 pcs
b) Box Size : 478mm X 650mm X 288 mm
2016G2017H2018J2019
F
Jun7Jul8Aug9Sep
6
CBA
2014E2015
D
Apr5May
4
201320122011
2020
K
Oct
A
Nov
B
DecMarFebJan
C321
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8-3. Label Description
Model Name
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LP140WD2
Liquid Crystal Display
Product Specification
Lenovo CODE
LGD CODE
LGD Code
(1) Model Name : L P 1 4 0 W D 2 - T L D 2
(2) Lot Mark : 1 4 0 A 6 0 0 0 0 0 0 0 1
Lenovo Code
Lot Mark
Revision Code
Product Type
Display Mode
Basic Model Serial No.
Resolution : HD+
Size (inch) : 14.0”
Application : NBPC
LGPL Brand Initial: L
SERIAL NO.
MONTH
YEAR
SIZE
1)P/N : 0A66655
2)FRU : 04W3331
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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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LP140WD2
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.
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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
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LP140WD2
Liquid Crystal Display
Product Specification
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 5qC and 35qC 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) 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
ion-blown equipment or in such a condition, etc.
(2) The protection film is attached to the polarizer with a small amount of glue. If some stress is applied
to rub the protection film against the polarizer during the time you peel off the film, the glue is apt to
remain on the polarizer.
Please carefully peel off the protection film without rubbing it against the polarizer.
(3) 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 polarizer after the protection film is peeled off.
(4) You can remove the glue easily. When the glue remains on the polarizer surface or its vestige is
recognized, please wipe them off with absorbent cotton waste or other soft material like chamois
soaked with normal-hexane.
Ver. 1.0Feb. 22, 2012
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APPENDIX A. Enhanced Extended Display Identification Data (EEDIDTM) 1/3
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LP140WD2
Liquid Crystal Display
Product Specification
EDID Data for Lenovo _ ver. 0.2
Byte
Byte
(Dec)
(He x)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
EDID Version
16
Vendor / Product
17
18
19
20
21
22
23
Display
Parameters
24
25
26
27
28
29
30
31
Panel Color
Coo rdinates
32
33
34
35
36
Timings
37
Established
38
39
40
41
42
43
44
45
46
47
48
49
Standard Timing IDHeader
50
51
Header
00
Header
01
Header
02
Header
03
Header
04
Header
05
Header
06
Header
07
EIS A m anu factur e co de ( 3 Character ID ) L GD
08
EISA manufacture code (Compressed ASCĊ)
09
Panel Supplier Reserved - Product Code 0362h
0A
( H ex. L SB first )
0B
LCD Module Serial No - Preferred but Optional ("0" If not used)
0C
LCD Module Serial No - Preferred but Optional ("0" If not used)
0D
LCD Module Serial No - Preferred but Optional ("0" If not used)
0E
LCD Module Serial No - Preferred but Optional ("0" If not used)