LG Display LP121WX3-TPB1 Specification

( ) Preliminary Specification
( ◆ ) Final Specification

Title 12.1” WXGA TFT LCD

LP121WX3

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

Customer HP

MODEL

SIGNATURE APPROVED BY

/

/

/

SUPPLIER LG Display Co., Ltd.

*MODEL LP121WX3

Suffix TPB1

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

APPROVED BY

H. S. Kim / G. Manager

REVIEWED BY

REVIEWED BY

Y. S. Ha / Manager

PREPARED BY

PREPARED BY

K.Y. Kwon / Engineer

SIGNATURE

SIGNATURE

Please return 1 copy for your confirmation with
your signature and comments.

Ver. 1.0 Feb. 03, 2010

Products Engineering Dept.

LG Display Co., Ltd

Product Specification

Contents

LP121WX3

Liquid Crystal Display

No ITEM

COVER
CONTENTS
RECORD OF REVISIONS

1
2

3
3-1
3-2
3-3
3-4
3-5

3-6

3-7
4

GENERAL DESCRIPTION
ABSOLUTE MAXIMUM RATINGS

ELECTRICAL SPECIFICATIONS
ELECTRICAL CHARACTREISTICS

INTERFACE CONNECTIONS
eDP SIGNAL TIMING SPECIFICATION

SIGNAL TIMING SPECIFICATIONS

SIGNAL TIMING WAVEFORMS

COLOR INPUT DATA REFERNECE

POWER SEQUENCE
OPTICAL SFECIFICATIONS

Page

1
2
3
4
5

6-7

8

9
10
10

11

12

13-15

5
6 RELIABLITY

7 INTERNATIONAL STANDARDS
7-1 SAFETY
7-2 EMC

7-3 Environment
8 PACKING
8-1 DESIGNATION OF LOT MARK
8-2 PACKING FORM
9 PRECAUTIONS

Ver. 1.0 Feb. 03, 2010

MECHANICAL CHARACTERISTICS

A LGD Proposal for system cover design.
B Enhanced Extended Display Identification Data

16-19

20

21
21
21

22
22

23-24

25-29

30-32

Product Specification

RECORD OF REVISIONS

LP121WX3

Liquid Crystal Display

Revision No Revision Date Page Description

0.0 Feb. 10, 2009 All First Draft (Preliminary Specification) -

0.1 Jul. 07, 2009 4,6,7 Electrical Characteristics is updated 0.0
12 Power Sequence is updated

17,18 Mechanical Characteristics is updated

21 International Standards is updated

25 ~ 27 EDID Data is updated

0.2 Dec. 07, 2009 6 Updated the Electrical Characteristics 0.1
12 Updated the Power Sequence

25 ~ 27 Updated the EDID Data

1.0 Feb. 03, 2010 30 ~ 32 Updated the EDID data 1.0
All Final Specification

EDID

ver

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

1. General Description

The LP121WX3 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 12.1 inches diagonally measured active display area with
WXGA resolution(800 vertical by 1280 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 6-bit gray scale signal for each dot, thus, presenting a palette of more than
262,144 colors.
The LP121WX3 has been designed to apply the interface method that enables low power, high speed, low
EMI.
The LP121WX3 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 sub-pixels, the
LP121WX3 characteristics provide an excellent flat display for office automation products such as Notebook
PC.

eDP &

Timing

CN 1 User connector 30 Pin

Control

Block

GIP(Gate In Panel)

1

EEPROM

BLOCK

POWER
BLOCK

Source Driver Circuit

1

TFT-LCD Panel

(1280 x 800)

1280

LED

Driver

9Pin

Control & Data

CN2

FPC

Power EDID signal & Power

800

LED Backlight Ass’y

General Features

Active Screen Size 12.1 inches diagonal
Outline Dimension
Pixel Pitch 0.204 mm × 0.204 mm
Pixel Format 1280 horiz. By 800 vert. Pixels RGB strip arrangement
Color Depth 6-bit, 262,144 colors
Luminance, White 200 cd/m2(Typ.5 point)
Power Consumption Total 4.2 Watt(Max.) @ LCM circuit 1.0Watt(Max @ Mosaic), B/L input 3.2Watt(Max.)
Weight 285g (Max.)
Display Operating Mode Transmissive mode, normally white
Surface Treatment Anti-glare treatment of the front polarizer

RoHS Comply Yes

Ver. 1.0 Feb. 03, 2010

275.8 (H) × 178.1 (V) × 5.5(D, max) mm

LP121WX3

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

Parameter Symbol

Power Input Voltage VCC -0.3 4.0 Vdc at 25  5C
Operating Temperature TOP 0 50 C 1
Storage Temperature HST -20 60 C 1
Operating Ambient Humidity HOP 10 90 %RH 1
Storage Humidity HST 10 90 %RH 1

Values

Units Notes

Min Max

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.

90% 80%

60%

Humidity[(%)RH]

Storage

40%

Operation

20%

10%

Wet Bulb
Temperature [℃]

20

10

0

60

50

40

30

-20

10

20 30 40 50

60 70 80 0

Dry Bulb Temperature [℃]

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

3. Electrical Specifications
3-1. Electrical Characteristics

The LP121WX3 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 B/L.with LED Driver.

Table 2. ELECTRICAL CHARACTERISTICS

Parameter Symbol

Unit Notes

Min Typ Max

LOGIC :

Power Supply Input Voltage VCC 3.0 3.3 3.6 V 1
Power Supply Input Current Mosaic ICC - 275 315 mA 2
Power Consumption PCC - 0.9 1.0 W 2
Power Supply Inrush Current ICC_P - - 2000 mA 3
eDP Impedance ZeDP 90 100 110 Ω 4
BACKLIGHT : ( with LED Driver)
LED Power Input Voltage VLED 7.0 12.0 21.0 V 5
LED Power Input Current ILED - 250 265 mA 6
LED Power Consumption PLED - 3.0 3.2 W 6
LED Power Inrush Current ILED_P - 2000 mA 7

Values

PWM Duty Ratio 5 - 100 %

8
PWM Jitter - 0 - 0.3 % 9
PWM Impedance ZPWM 20 40 60 kΩ

PWM Frequency FPWM
PWM High Level Voltage V

PWM Low Level Voltage V

PWM_H

PWM_L

200 - 1700 Hz

3.0 - 5.3 V
0 - 0.3 V

10

LED_EN Impedance ZPWM 20 40 60 kΩ
LED_EN High Voltage VLED_EN_H 3.0 - 5.3 V
LED_EN Low Voltage VLED_EN_L 0 - 0.3 V
Life Time 12,000 - - Hrs 11

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

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 whereas Mosaic pattern
is displayed and fv is the frame frequency.

3. The below figures are the measuring Vcc condition and the Vcc control block LGD used.

The Vcc condition is same the minimum of T1 at Power on sequence.

Rising time

Vcc

0V

4. This impedance value is needed to proper display and measured form eDP Tx to the mating connector.

5. The measuring position is the connector of LCM and the test conditions are under 25℃.

6. The current and power consumption with LED Driver are under the Vled = 12.0V , 25℃, Dimming of
Max luminance whereas White pattern is displayed and fv is the frame frequency.

7. 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

8. The operation of LED Driver below minimum dimming ratio may cause flickering or reliability issue.

9. If Jitter of PWM is bigger than maximum. It may cause flickering.

10. 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.

3.3V

Rising time
VLED

0V

10%

12.0V

90%

0.5ms

11 The life time is determined as the time at which the typical brightness of LCD is 50% compare to that of

initial value at the typical LED current. These LED backlight has 6 strings on it and the typical current
of LED’s string is base on 20mA.

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

3-2. Interface Connections

This LCD employs two interface connections, a 30 pin connector is used for the module electronics interface
and the other connector is used for the integral backlight system.
The electronics interface connector is a model CABLINE-VS RECE ASS’Y manufactured by I-PEX.

Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)

Pin Symbol Description Notes

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

NC No Connection

GND LCM Ground

NC No Connection
NC No Connection

GND LCM Ground

ML0- Complement Signal-Lane 0

ML0+ True Signal-Main Lane 0

GND LCM Ground

AUX+ True Signal-Auxiliary Channel

AUX- Complement Signal-Auxiliary Channel

GND LCM Ground
VCC
VCC

LCD Logic and driver power (3.3V Typ.)
LCD Logic and driver power (3.3V Typ.)

NC No Connection
GND LCM Ground
GND LCM Ground
HPD HPD signal pin
GND LCM Ground (LED Backlight Ground)
GND LCM Ground (LED Backlight Ground)
GND LCM Ground (LED Backlight Ground)
GND LCM Ground (LED Backlight Ground)

LED_EN

PWM

LED Backlight On/Off
System PWM Signal input for dimming

NC No Connection

NC No Connection

VLED
VLED
VLED
VLED

LED Backlight Power (7V-21V)
LED Backlight Power (7V-21V)
LED Backlight Power (7V-21V)
LED Backlight Power (7V-21V)

NC No Connection

1, Interface chips

1.1 LCD : IDT, VPP1420 (LCD Controller)

including eDP Receiver

1.2 System : TBD or equivalent
* Pin to Pin compatible with eDP

2. Connector

2.1 LCD : CABLINE-VS RECE ASS’Y, I-PEX
or its compatibles

2.2 Mating : CABLINE-VS PLUG CABLE

ASS’Y or equivalent.

2.3 Connector pin arrangement

30

[LCD Module Rear View]

1

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

3-3. eDP Signal Timing Specifications

3-3-1. DC Specification

The VESA Display Port related AC specification is compliant with the VESA Display Port Standard v1.1a.

Description Symbol Min Max Unit Notes

Differential peak-to-peak Input voltage

VDIFF p-p

120 -

mV

For high bit rate

40 - For reduced bit rate

Rx DC common mode voltage VCM

0 2.0 V -

3-3-2. AC Specification

The VESA Display Port related AC specification is compliant with the VESA Display Port Standard v1.1a.

Description Symbol Min Typ Max Unit Notes

Unit Interval for high bit rate
(2.7Gbps/lane)

Unit Interval for high bit rate
(1.62Gbps/lane)

Lane-to-Lane skew

UI_High_Rate - 370 - ps

UI_Low_Rate - 617 - ps

V Rx-SKEW­INTER_PAIR

- - 5200 ps -

Range is nominal ± 350ppm.

DisplayPort Link Rx does not

require local crystal for link
clock generation

Lane intra-pair skew

Ver. 1.0 Feb. 03, 2010

V Rx-SKEW­INTRA_PAIR

- - 100 ps For high bit rate

- - 300 ps For reduced bit rate

LP121WX3

Liquid Crystal Display

Product Specification

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 eDP Tx/Rx for its proper operation.

Table 4. TIMING TABLE

ITEM Symbol Min Typ Max Unit Note

DCLK Frequency f

Period t

Hsync

Width-Active t

Period tVP 810 820 832

Vsync

Width-Active t
Horizontal back porch t

Data

Enable

Horizontal front porch t
Vertical back porch t
Vertical front porch t

3-5. Signal Timing Waveforms

Data Enable, Hsync, Vsync

DCLK

tCLK

0.5 Vcc

CLK

HP

WHA

WVA

HBP

HFP

VBP

VFP

- 69.3 - MHz

1376 1408 1480

1280 1280 1280

800 800 800

56 72 96
16 24 64

6 12 18
2 4 8

High: 0.7VCC

Low: 0.3VCC

tCLK Width tWH 24 32 40

tHP Width tWV 2 4 6

tCLK

tHP

Condition : VCC =3.3V

tHP

Hsync

tWH

tWHA

Data Enable

t

HBP

tVP

tWV

Vsync

Data Enable

t

VBP

Ver. 1.0 Feb. 03, 2010

tWVA

t

HFP

t

VFP

LP121WX3

Liquid Crystal Display

Product Specification

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.

Table 5. COLOR DATA REFERENCE

Input Color Data

Basic
Color

RED

GREEN

BLUE

Color

Black

Red

Green

Blue

Cyan

Magenta

Yellow

White

RED (00)

RED (01)

…

RED (62)

RED (63)

GREEN (00)

GREEN (01)

...
GREEN (62)
GREEN (63)
BLUE (00)
BLUE (01)

…
BLUE (62)
BLUE (63)

RED

MSB LSB

MSB LSB

GREEN

BLUE

MSB LSB

R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B5 B 4 B 3 B2 B 1 B 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 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1
0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1

1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0

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 0 0 0 0 0 0 0 0
0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0

… … …

1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0

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 0 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 0 0 1 1 1 1 1 0 0 0 0 0 0 0

0 0 0 0 0 0 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 0 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 0 0 1 1 1 1 1 0
0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1

Ver. 1.0 Feb. 03, 2010

Product Specification

LP121WX3

Liquid Crystal Display

3-7. Power Sequence

Power Supply Input

VCC

0V

HPD Out from LCM

HPD

Aux Channel Data Input

AUX

Main Link Data Input

ML0

LED BL
On/Off Control Signal

LED_EN

LED BL
Dimming Control Signal
PWM

90%

10%

T

0V

0V

0V

0V (Off)

0V (Low)

2

3.3V

T

1

Vcm

T

3

Vcm

Valid Channel Operational Data

Link
Training

Idle

Valid
Data

T

4

T

Valid Video Data

5

T8

3.0V

T10

Valid Data

T14

3.0V

90%

10%

T7

T6

T9

T11

T15

LED Driver Input Voltage

VLED

0V

0V

10%

90%

T12

T13

90%

10%

Table 6. POWER SEQUENCE TABLE

Logic

Parameter

T

1

T

2

T3 50 75 ­T

4

T5 0 - - ms

T6 500 - - ms
T

7

T

8

Min. Typ. Max.

0.5 - 10 ms
0 - 200 ms

0 - - ms

3 - 10 ms

200 - - ms

Value

Units

ms

LED

Parameter

T9 200 - - ms
T10 0 - - ms
T11 0 - - ms
T12 0.5 - - ms
T13 0 - 5000 ms

T14 10 - - ms

T15 10 - - ms

Min. Typ. Max.

Value

Note)

1. Do not insert the mating cable when system turn on.

2. Valid Data have to meet “3-3. eDP 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.

Units

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

4. Optical Specification

Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 30 minutes in
a dark environment at 25C. The values specified are at an approximate distance 50cm from the LCD surface
at a viewing angle of  and  equal to 0.
FIG. 1 presents additional information concerning the measurement equipment and method.

FIG. 1 Optical Characteristic Measurement Equipment and Method

Optical Stage(x,y)

LCD Module

Pritchard 880 or
equivalent

50cm

Table 8. OPTICAL CHARACTERISTICS

Ta=25C, VCC=3.3V, fV=60Hz, f

Parameter Symbol

Contrast Ratio CR 200 300 - 1
Surface Luminance, white LWH 170 200 - cd/m
Luminance Variation 

Response Time
Color Coordinates

RED RX 0.562 0.592 0.622

GREEN GX 0.304 0.334 0.364

BLUE BX 0.124 0.154 0.184

WHITE WX 0.283 0.313 0.343

Viewing Angle 5

x axis, right(=0) r 40 - - degree
x axis, left (=180) l 40 - - degree
y axis, up (=90) u 10 - - degree
y axis, down (=270) d 30 - - degree

Gray Scale 6

WHITE

TrR+

Tr

D

RY 0.321 0.351 0.381

GY 0.519 0.549 0.579

BY 0.100 0.130 0.160

WY 0.299 0.329 0.359

Min Typ Max

- - 1.6 3

- 16 - ms 4

Values

Units Notes

2

CLK

= 69.3MHz

2

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

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.

LWH = Average(L1,L

3. The variation in surface luminance , The panel total variation (

at each test position 1 through 13 and then defined as followed numerical formula.

For more information see FIG 2.
Maximum(L1,L



WHITE

=

Minimum(L1,L

4. Response time is the time required for the display to transition from white to black (rise time, TrR) and
from black to white(Decay Time, TrD). For additional information see FIG 3.

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 * fV = 60Hz

, … L

2

)

5

) is determined by measuring L

, … L

2

, … L

2

WHITE

)

13

)

13

N

Gray Level Luminance [%] (Typ)

L0 0.30

L7 2.02
L15 6.35
L23 12.7
L31 20.7
L39 33.4
L47 50.9
L55 72.8
L63 100

Ver. 1.0 Feb. 03, 2010

Product Specification

FIG. 2 Luminance

<measuring point for surface luminance & measuring point for luminance variation>

H

LP121WX3

Liquid Crystal Display

A

C

L6

L7

D

L8

H,V : ACTIVE AREA
A : H/4 mm
B : V/4 mm

L2

L3

C : 10 mm
D : 10 mm

B

V

L9

L1

L10

POINTS : 13 POINTS

Center Point

L4 L5

L11 L13

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”.

L12

Tr

R

%

100

90

Optical

Response

10

0

white

Ver. 1.0 Feb. 03, 2010

black

Tr

D

white

LP121WX3

Liquid Crystal Display

Product Specification

5. Mechanical Characteristics

The contents provide general mechanical characteristics for the model LP121WX3. In addition the figures
in the next page are detailed mechanical drawing of the LCD.

Horizontal 275.8  0.5mm

Outline Dimension

Bezel Area

Active Display Area

Weight 285g (Max)

Surface Treatment Anti-glare treatment of the front polarizer

Vertical 178.1  0.5mm

Thickness 5.5mm (Max)
Horizontal 266.5  0.5mm
Vertical 166.6  0.5mm

Horizontal 260.93  0.3mm

Vertical 163.08  0.3mm

Ver. 1.0 Feb. 03, 2010

Product Specification

LP121WX3

Liquid Crystal Display

<FRONT VIEW>

Note) Unit:[mm], General tolerance:  0.5mm

Ver. 1.0 Feb. 03, 2010

Product Specification

LP121WX3

Liquid Crystal Display

<REAR VIEW>

Note) Unit:[mm], General tolerance:  0.5mm

Ver. 1.0 Feb. 03, 2010

Product Specification

[ DETAIL DESCRIPTION OF SIDE MOUNTING SCREW ]

LP121WX3

Liquid Crystal Display

*Screw Torque (4 point): Max. 2kgf·cm

*Mounting SCREW Depth : 1.8mm max

Notes : 1. Screw plated through the method of non-electrolytic nickel plating is preferred
to reduce possibility that results in vertical and/or horizontal line defect due to
the conductive particles from screw surface.

Ver. 1.0 Feb. 03, 2010

Liquid Crystal Display

Product Specification

6. Reliability

Environment test condition

No. Test Item Conditions

1 High temperature storage test Ta= 60C, 240h
2 Low temperature storage test Ta= -20C, 240h
3 High temperature operation test Ta= 50C, 50%RH, 240h
4 Low temperature operation test Ta= 0C, 240h
5 Vibration test (non-operating) Sine wave, 10 ~ 500 ~ 10Hz, 1.5G, 0.37oct/min

3 axis, 1hour/axis

6 Shock test (non-operating) Half sine wave, 180G, 2ms

one shock of each six faces(I.e. run 180G 2ms
for all six faces)

LP121WX3

7 Altitude operating

storage / shipment

{ Result Evaluation Criteria }
There should be no change which might affect the practical display function when the display quality
test is conducted under normal operating condition.

0 ~ 10,000 feet (3,048m) 24Hr
0 ~ 40,000 feet (12,192m) 24Hr

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

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.

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

Ver. 1.0 Feb. 03, 2010

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

LP121WX3

Liquid Crystal Display

Year

Mark

2003 2002 2001

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 : 30 pcs
b) Box Size : 480mm × 348mm × 243mm

3 2 1

2004 5 2005

4

Apr 5 May

4

2006 7 2007 8 2008 9 2009

6

Jun 7 Jul 8 Aug 9 Sep

6

2010

0

Oct

A

Nov

B

Dec Mar Feb Jan

C 3 2 1

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

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
t h e
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.

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.

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

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) 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. 1.0 Feb. 03, 2010

Product Specification

LGD Proposal for system cover design. (Appendix A)

LP121WX3

Liquid Crystal Display

1

Gap check for securing the enough gap between LCM
and System cover.

Max Thickness

LCM Reflector Side

A Boundary Line

Sponge

System Cover

1.Rear side of LCM is sensitive against external stress,and previous check

about interference is highly needed.

Notes

2.In case there is something from system cover comes into the boundary
above,mechanical interference may cause the FOS defects.

(Eg:Ripple,White spot..)

2 Check if antenna cable is sufficiently apart from T-CON of LCD Module.

NO GOOD

GOOD

Notes

Ver. 1.0 Feb. 03, 2010

1.If system antenna is overlapped with T-CON,it might be cause the noise.

Product Specification

LGD Proposal for system cover design. (Appendix A)

LP121WX3

Liquid Crystal Display

3

Gap check for securing enough gap between LCM
and System hinge.

LCM Reflector Side

Side Mount Screw Hole (4ea)

1. At least 2.0mm gap is required to secure from any damage

during shock test.

Notes

2. “L” type hinge is more recommended than “I” type to get better

Hinge
GAP:Min2.0mm

(“I” TYPE)

COF

(D-IC)

(“L” TYPE)

performance for shock test.

4

Checking the path of the System wire.

#3

#2

Ok Bad

1. It is required to handle COF area carefully .

2. Good : Wire path does not overlap with LCM

Notes

OK : Wire path is located between COFs.

BAD : Wire path overlapped with COF area.

Flat type cable is highly recommended if cable should be located on bad case

Ver. 1.0 Feb. 03, 2010

#1

Good

Product Specification

LGD Proposal for system cover design. (Appendix A)

5 Using a bracket on the top of LCM is not recommended.

LP121WX3

Liquid Crystal Display

bracket

With bracket Without bracket

1.Condition without bracket is good for mechanical noise,and can minimize
the light leakage from deformation of bracket.

Notes

2.The results shows that there is no difference between the condition
with or without bracket.

6 Securing additional gap on CNT area..

A

A~A-1

cut

A-1

1.CNT area is specially sensitive against external stress,and additional

Notes

gap by cutting on system cover will be helpful on removing the Ripple.

2.Using a thinner CNT will be better. (eg: FPC type)

Ver. 1.0 Feb. 03, 2010

System cover inner side.

User connector
area.

User connector
Cable pathway.

FPC:Flexible Printed Circuit.

Product Specification

LGD Proposal for system cover design. (Appendix A)

7 Checking the path of System LVDS Cable.

See Detail “A”

Detail “A”

LP121WX3

Liquid Crystal Display

LVDS Cable Guide

PCB

LVDS Cable

1. At least 1.0mm gap (Ⓐ ) is required to secure from any damage by
overlapping system cable and LCM
(This overlap may cause a Abnormal Display after hinge test)

Notes

2.”Flat” type of LVDS cable is more recommended than “Cylinderical” type .

3. Making LVDS Cable Guide will give better performance
. (Refer to detail “A”)

Ver. 1.0 Feb. 03, 2010

Connector

Ⓐ

Liquid Crystal Display

Product Specification

LGD Proposal for system cover design. (Appendix A)

8 Securing additional gap between front cover & LCD at edge of front cover.

LP121WX3

No Good

Front Cover

Good

Front Cover

Supporter Main

Back Cover

Supporter Main

Back Cover

“A”

A

“A” : Overlap between Front Cover & Liquid Crystal area

Cell

Panel Size

Front Bezel Open Size
Active Area

Liquid Crystal

A

“A”

Recess Depth(Ⓑ) : ?.?mm

Resses Width(Ⓐ) : ?.?mm

※ Recess Width(Ⓐ) : Up / Down /Left /Right
※ Recess Depth(Ⓑ) : Up / Down /Left /Right

1.Active area which is filled with Liquid Crystal is sensitive against
external stress, so additional gap to make recess area on the edge of

Notes

front cover will be helpful to prevent mechanical Ripple.
(Dimension of Recess depends on each model design)

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

APPENDIX B. Enhanced Extended Display Identification Data (EEDIDTM) 1/3

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

APPENDIX B. Enhanced Extended Display Identification Data (EEDIDTM) 2/3

Ver. 1.0 Feb. 03, 2010

LP121WX3

Liquid Crystal Display

Product Specification

APPENDIX B. Enhanced Extended Display Identification Data (EEDIDTM) 3/3

Ver. 1.0 Feb. 03, 2010