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 5C
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 39C 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
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