LG LP-125WH2-SLB2 Service manual
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Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ) Final Specification
◆
LP125WH2
Title 12.5” HD TFT LCD
Customer LGE
MODEL
www.jxlcd.com
www.jxlcd.com
APPROVED BY SIGNATURE
/
/
/
SUPPLIER LG Display Co., Ltd.
*MODEL LP125WH2
Suffix SLB2
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
S. R. Kim / Manager
REVIEWED BY
N. J. Seong / Manager
PREPARED BY
J. T. Kim / Engineer
S. K. Ahn / Engineer
SIGNATURE
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0 Jun. 30, 2011
Products Engineering Dept.
LG Display Co., Ltd
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Product Specification
Contents
LP125WH2
Liquid Crystal Display
No ITEM
COVER
CONTENTS
RECORD OF REVISIONS
1 GENERAL DESCRIPTION
2 ABSOLUTE MAXIMUM RATINGS
3 ELECTRICAL SPECIFICATIONS
3-1 ELECTRICAL CHARACTREISTICS
3-2 INTERFACE CONNECTION
3-3 LVDS SIGNAL TIMING SPECIFICATIONS
3-4 SIGNAL TIMING SPECIFICATIONS
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3-5 SIGNAL TIMING WAVEFORMS
3-6 COLOR INPUT DATA REFERNECE
3-7 POWER SEQUENCE
4 OPTICAL SFECIFICATIONS
Page
1
2
3
4
5
6
7
8
10
10
11
12
13
5 MECHANICAL CHARACTERISTICS
6 RELIABLITY
7 INTERNATIONAL STANDARDS
7-1 SAFETY
7-2 EMC
8 PACKING
8-1 DESIGNATION OF LOT MARK
8-2 PACKING FORM
9 PRECAUTIONS
A APPENDIX. Enhanced Extended Display Identification Data
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20
21
21
22
22
23
25
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3-2. Interface Connections
LP125WH2
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision NoRevision Date Page Description
0.0 Jun. 9. 2011 All First Draft (Preliminary Specification) 0.0
8 Add Connector UJU or equivalent
1.0 Jun. 30. 2011
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www.jxlcd.com
17 AddLCM dimension Drawing
- Final Specification
EDID
ver
1.0
Ver. 1.0 Jun. 30, 2011
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LP125WH2
Liquid Crystal Display
Product Specification
1. General Description
The LP125WH2 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 transmissivetype display operating in
the normally white mode. This TFT-LCD has 12.5inches diagonally measured active display area with HD
resolution(1366 horizontal by 768 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 LP125WH2 has been designed to apply the interface method that enables low power, high speed, low
EMI.
The LP125WH2 is intended to support applications where thin thickness, low power are critical factors and
graphic displays are important. In combination with the verticalarrangement of the sub-pixels, the
LP125WH2 characteristics provide an excellent flat display for office automation products such as Notebook
PC.
EDID
CN
1
User connector
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40
Pin
Control & Data Power EDID signal & Power
BLOCK
POWER
BLOCK
LVDS &
Timing
Control
Block
PWM & VBL
TFT-LCD Panel
(1366 x 768)
1
Source Driver Circuit
LED Backlight Ass’y
1366
General Features
Active Screen Size 12.5 inches diagonal
Outline Dimension 290.5(H) × 180.9(V) × 3.7(D,Max.) [mm]
Pixel Pitch 0.201mm × 0.201 mm
Pixel Format 1366 horiz. By 768 vert. Pixels RGB strip arrangement
Color Depth 6-bit, 262,144 colors
Luminance, White 300 cd/m2(Typ.5 point)
Power Consumption Total 4.8 W(Typ.) Logic :0.8 W (Typ.@ Mosaic), B/L : 4.0W (Typ.@ VLED 12V ))
Weight 290g (Max.)
Display Operating Mode Transmissivemode, normally Black
Surface Treatment Anti Glare treatment of the front polarizer
RoHS Compliance Yes
BFR / PVC / As Free Yes for all
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COG(Chip On Glass)
768
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1
LP125WH2
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
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity
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.
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Wet Bulb
Temperature [℃]
20
10
0
VCC -0.3 4.0 Vdc at 25 ± 5°C
TOP 0 50 °C 1
HST -20 60 °C 1
HOP 10 90 %RH 1
HST 10 90 %RH 1
50
40
30
Values
Min Max
90%80%
60
Units Notes
60%
Humidity[(%)RH]
Storage
40%
Operation
20%
10%
-20
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10
20 30 40 50
Dry Bulb Temperature [℃]
60 70 800
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LP125WH2
Liquid Crystal Display
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
The LP125WH2 requires two power inputs. One is employed to power the LCD electronics and to drive the
TFT array and liquid crystal. The second input which powers the LED BL.
Table 2. ELECTRICAL CHARACTERISTICS
LOGIC :
BACKLIGHT : ( with LED Driver)
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PWM Jitter
SymbolParameter
-
Values
MaxTypMin
11010090ZLVDSLVDS Impedance
Ω
kΩ604020ZPWMPWM Impedance
NotesUnit
1V3.63.33.0VCCPower Supply Input Voltage
2mA300250-ICCMosaicPower Supply Input Current
2W1.00.8-PCCPower Consumption
3mA1500-ICC_PPower Supply Inrush Current
4
5V21.012.07.0VLEDLED Power Input Voltage
6mA22.521-ILEDLED Power Input Current
6W4.24.0-PLEDLED Power Consumption
7mA2000-ILED_PLED Power Inrush Current
8%100-1PWM Duty Ratio
9%0.2-0
PWM High Level Voltage
PWM Low Level Voltage
Ver. 1.0 Jun. 30, 2011
PWM_H
PWM_L
10Hz1000-200FPWMPWM Frequency
V5.3-3.0V
V0.3-0V
kΩ604020ZPWMLED_EN Impedance
V5.3-3.0VLED_EN_HLED_EN High Voltage
V0.3-0VLED_EN_LLED_EN Low Voltage
11Hrs--12,000Life Time
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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 Icccurrent and power consumption are under
the Vcc = 3.3V , 25℃, fv = 60Hz condition and Mosaic pattern.
3. The below figures are the measuring Vcc condition and the Vcccontrol block LGD used.
The Vcc condition is same as the minimum of T1 at Power on sequence.
LP125WH2
Rising time
Vcc
0V
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4. This impedance value is needed for proper display and measured form LVDS Txto 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 and White pattern with the normal frame frequency operated(60Hz).
7. The below figures are the measuring Vledcondition
and the Vledcontrol block LGD used.
VLED control block is same with Vcc control block.
90%
10%
0.5ms
3.3V
Rising time
VLED
0V
10%
12.0V
90%
0.5ms
8. The operation of LED Driver below minimum dimming ratio may cause flickering or reliability issue.
9. 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.
10. 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 condition.
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LP125WH2
Liquid Crystal Display
Product Specification
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.
Pin Symbol Description Notes
1 NC No Connection
2 VCC LCD Logic and driver power (3.3V Typ.)
3 VCC LCD Logic and driver power (3.3V Typ.)
4 V EEDID DDC Power (3.3V)
5 NC No Connection
6 ClkEEDID DDC Clock
7 DATA EEDID DDC Data
8 ORX0- Negative LVDS differential data input
9 ORX0+ Positive LVDS differential data input
10 GND LCM Ground
11 ORX1- Negative LVDS differential data input
12 ORX1+ Positive LVDS differential data input
13 GND LCM Ground
14 ORX2- Negative LVDS differential data input
15 ORX2+ Positive LVDS differential data input
16 GND LCM Ground
17 ORXC- Negative LVDS differential clock input
18 ORXC+ Positive LVDS differential clock input
19 GND LCM Ground
20
21
22 GND LCM Ground
23
24
25 GND LCM Ground
26
27
28 GND LCM Ground
29
30
31
32
33
34
35
36
37
38
39
40
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NC
NC
NC
NC
NC
NC
NC
NC
GND
GND
GND
NC
PWM System PWM Signal input for dimming
LED_EN
NC
VLED LED Backlight Power (7V-21V)
VLED LED Backlight Power (7V-21V)
VLED LED Backlight Power (7V-21V)
No Connection
No Connection
No Connection
No Connection
No Connection
No Connection
No Connection
No Connection
LCM Ground (LED Backlight Ground)
LCM Ground (LED Backlight Ground)
LCM Ground (LED Backlight Ground)
No Connection
LED Backlight On/Off
No Connection
[Interface Chip]
1. LCD :
SiW, SW0632 (LCD Controller)
Including LVDS Receiver.
2. System :
* Pin to Pin compatible with LVDS
[Connector]
LSMtronGT05Q-40S-H10
UJU IS050-L40B-C10
or equivalent
[Mating Connector]
20345-#40E-## series or equivalent
[Connector pin arrangement]
40
[LCD Module Rear View]
1
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Product Specification
3-3. LVDS Signal Timing Specifications
3-3-1. DC Specification
LP125WH2
Liquid Crystal Display
Description
LVDS Differential Voltage |VID| 100 600 mV LVDS Common mode Voltage V
LVDS Input Voltage Range V
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3-3-2. AC Specification
LVDS Clock to Data Skew Margin
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Description Symbol Min Max Unit Notes
Symb
ol
CM
IN
t
SKEW
t
SKEW
Min Max Unit Notes
0.6 1.8 V -
0.3 2.1 V -
-400 + 400 ps
-600 + 600 ps
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. 1.0 Jun. 30, 2011
t
SKEW_EO
F
DEV
F
MOD
-1/7 + 1/7 T
- ± 3 % -
- 200 KHz -
clk
-
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