LG LP-156WH2-TLAA Service manual

Product Specification

SPECIFICATION

LP156WH2

Liquid Crystal Display

FOR

APPROVAL

◆

)

(
(

Preliminary Specification

)

Final Specification

MODEL

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15.6” HD TFT LCDTitle

LenovoCustomer

*When you obtain standard approval,
please use the above model name without suffix

LG Display Co., Ltd.SUPPLIER
LP156WH2*MODEL
TLAASuffix

SIGNATUREAPPROVED BY

/

/

/

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

Ver. 0.3 Jul. 21, 2009

APPROVED BY

APPROVED BY

C. Park / S.Manager

REVIEWED BY

REVIEWED BY

J. H. Park / Manager

PREPARED BY

PREPARED BY

J. P. Lee / Engineer

B. I. Park / Engineer

Products Engineering Dept.

LG Display Co., Ltd

SIGNATURE

SIGNATURE

1 / 31

Product Specification

Contents

LP156WH2

Liquid Crystal Display

No

COVER
CONTENTS
RECORD OF REVISIONS

1
2

3
3-1
3-2
3-3
3-3
3-4
3-5
3-6
4

GENERAL DESCRIPTION
ABSOLUTE MAXIMUM RATINGS

ELECTRICAL SPECIFICATIONS
ELECTRICAL CHARACTREISTICS

INTERFACE CONNECTIONS
LVDS SIGNAL TIMING SPECIFICATION
SIGNAL TIMING SPECIFICATIONS
SIGNAL TIMING WAVEFORMS
COLOR INPUT DATA REFERNECE

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POWER SEQUENCE
OPTICAL SFECIFICATIONS

ITEM

Page

1
2
3
4
5

6-7

8

9-10

11
11
12
13

14-16

5

Ver. 0.3 Jul. 21, 2009

MECHANICAL CHARACTERISTICS
APPENDIX. LPL PROPOSAL FOR SYSTEM COVER DESIGN A
RELIABLITY6
INTERNATIONAL STANDARDS7
SAFETY 7-1

EMC 7-2
ENVIRONMENT 7-3

PACKING8
DESIGNATION OF LOT MARK 8-1
PACKING FORM 8-2
PRECAUTIONS9
APPENDIX. Enhanced Extended Display Identification Data A

17-20
21-23

24

25
25
25

26

26
27-28
29-31

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Product Specification

RECORD OF REVISIONS

LP156WH2

Liquid Crystal Display

DescriptionPageRevision DateRevision No

First Draft (Preliminary Specification)-May. 20, 20090.0

Add International Standards Item (7-3. Environment)25

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EDID

ver

-

0.0 Add EEDID Data Table (Checksum : 38)29-31Jun. 17, 20090.1

0.0 Add Color Coordinate Specification14Jul. 08. 20090.2

0.0 Update Rear View Drawing (Al Plate)19Jul. 21. 20090.3

Ver. 0.3 Jul. 21, 2009

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LP156WH2

Liquid Crystal Display

Product Specification

1. General Description

The LP156WH2 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 15.6 inches 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 LP156WH2 has been designed to apply the interface method that enables low power, high
speed, low EMI. The LP156WH2 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 LP156WH2 characteristics provide an excellent flat display for office automation products such as
Notebook PC.

User connector 40 Pin

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General Features

EEPROM Block

for EDID

LVDS

1port

VCC

VLED

LED_EN

PWM

Control & Data Power

Timing Control

Block

DVCC

Power

Block

LED Driver

Block

CLKs

VGH, VGL, GMA

M

i

n

i

-

L

V

D

S

AVCC, AVDD

GIP CLKs, DSC

VOUT_LED

FB1~4

1

768

1366

TFT-LCD Panel

(FHD, GIP, TN)

Source Driver
(Bottom Bent)

LED Backlight Ass’y

EDID signal & Power

15.6 inches diagonal Active Screen Size

359.3(H, typ) × 209.5(V, typ) × 5.5(D,max) [mm]Outline Dimension

0.252mm × 0.252 mmPixel Pitch
1366 horiz. By 768 vert. Pixels RGB strip arrangementPixel Format
6-bit, 262,144 colorsColor Depth
220 cd/m2(Typ.5 point @ PWM Duty = 100%)Luminance, White
Total 4.6 W(Typ.) Logic : 1.3W (Typ.@ Mosaic), B/L : 3.3W (Typ.@ VLED 12V )Power Consumption
450g (Max.)Weight

Ver. 0.3 Jul. 21, 2009

Transmissive mode, normally whiteDisplay Operating Mode
Glare treatment (3H) of the front Polarizer Surface Treatment

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LP156WH2

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 Notes

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

Symbol

60

50

40

30

Values

MaxMin

90% 80%

60%

40%

20%

10%

Units

Humidity[(%)RH]

Storage

Operation

at 25  5CVdc4.0-0.3VCC

1C500TOP
1C60-20HST
1%RH9010HOP
1%RH9010HST

-20

Ver. 0.3 Jul. 21, 2009

10

20 30 40 50

Dry Bulb Temperature [℃]

60 70 800

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LP156WH2

Liquid Crystal Display

Product Specification

3. Electrical Specifications
3-1. Electrical Characteristics

The LP156WH2 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.

Table 2. ELECTRICAL CHARACTERISTICS

Parameter Symbol

LOGIC :

BACKLIGHT : ( without LED Driver)

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PWM High Level Voltage
PWM Low Level Voltage

LED_EN High Voltage
LED_EN Low Voltage

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ICC Power Supply Input Current

PWM_H

PWM_L

LED_EN_H

LED_EN_L

Values

MaxTypMin

kΩ604020ZPWM PWM Impedance

kΩ604020ZLED_EN LED_EN Impedance

NotesUnit

1V3.63.33.0VCC Power Supply Input Voltage
2mA445385­2W1.51.3-PCC Power Consumption
3mATBDTBD-ICC_P Power Supply Inrush Current
4Ω11010090ZLVDS LVDS Impedance

5V20.012.07.0VLED LED Power Input Voltage
6mA310275- ILED LED Power Input Current
6W3.73.3-PLED LED Power Consumption
7mATBDTBD-ILED_P LED Power Inrush Current
8%100-12.5- PWM Duty Ratio
9%0.3-0- PWM Jitter

10Hz1000-200FPWM PWM Frequency
V5.3-3.0V
V0.5-0V

V5.3-3.0V
V0.5-0V

11Hrs--12,000 Life Time

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.

Ver. 0.3 Jul. 21, 2009

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Liquid Crystal Display

Product Specification

3. Electrical Specifications

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.

LP156WH2

Rising time
Vcc

0V

4. This impedance value is needed to proper display and measured form LVDS 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

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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. 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.

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 4 strings on it and the typical current
of LED’s string is base on 22mA.

Ver. 0.3 Jul. 21, 2009

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LP156WH2

Liquid Crystal Display

Product Specification

3-2. Interface Connections

This LCD employs one interface connections, a 40 pin connector is used for the module electronics interface
and LED Driver.
The electronics interface connector is a model 20455-040E-0x manufactured by I-PEX.

Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)

NotesDescriptionSymbolPin

No Connection. NC1
Power Supply, 3.3V Typ.VCC2
Power Supply, 3.3V Typ.VCC3
DDC 3.3V powerV EEDID4
No ConnectionNC5
DDC ClockClk EEDID6
DDC DataDATA EEDID7
Negative LVDS differential data inputOdd_RIN 0-8
Positive LVDS differential data inputOdd_RIN 0+9
GroundGND10
Negative LVDS differential data inputOdd_RIN 1- 11
Positive LVDS differential data inputOdd_RIN 1+12
GroundGND13
Negative LVDS differential data inputOdd_RIN 2-14
Positive LVDS differential data inputOdd_RIN 2+15
GroundGND16
Negative LVDS differential clock inputOdd_CLKIN-17
Positive LVDS differential clock inputOdd_CLKIN+18

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NC No Connection21

GroundGND19
No ConnectionNC20

GroundGND22
No ConnectionNC23
No ConnectionNC24
GroundGND25
No ConnectionNC26
No ConnectionNC27
GroundGND28
No ConnectionNC29
No ConnectionNC30
LED GroundVLED_GND31

LED GroundVLED_GND32
LED GroundVLED_GND33

No Connection. NC34
PWM for Luminance controlBLIM35

Backlight On/Off ControlBL_On36
No ConnectionNC37
LED Power Supply (7V-20V)VLED38
LED Power Supply (7V-20V)VLED39
LED Power Supply (7V-20V)VLED40

1, Interface chips

1.1 LCD : SW, SW0633 (LCD Controller)
including LVDS Receiver

1.2 System : THC63LVDF823A
or equivalent
* Pin to Pin compatible with LVDS

2. Connector

2.1 LCD :20455-040E-0x, I-PEX
or its compatibles

2.2 Mating : 20453-040T-0x, I-PEX
or equivalent.

2.3 Connector pin arrangement

40

[LCD Module Rear View]

1

Ver. 0.3 Jul. 21, 2009

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Product Specification

LVDS +

LVDS -

0V

V

CM

# |VID| = |(LVDS +) – (LVDS -)|
# VCM= {(LVDS +) + ( LVDS -)}/2

|VID|

V

IN_MAXVIN_MIN

LVDS Data

t

SKEW

LVDS Clock

T

clk

t

SKEW (Fclk

= 1/T

clk

)

1) 85MHz > Fclk ≥ 65MHz : -400 ~ +400

2) 65MHz > Fclk ≥ 25MHz : -600 ~ +600

3-3. LVDS Signal Timing Specifications

3-3-1. DC Specification

LP156WH2

Liquid Crystal Display

Description

LVDS Common mode Voltage
LVDS Input Voltage Range

3-3-2. AC Specification

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LVDS Clock to Data Skew Margin

Symbo

l

CM

IN

SKEW

SKEW

NotesUnitMaxMin

-mV600100|VID|LVDS Differential Voltage

-V1.80.6V

-V2.10.3V

NotesUnitMaxMinSymbolDescription

ps+ 400 400-t

600-

ps+ 600t

85MHz > Fclk ≥

65MHz

65MHz > Fclk ≥

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. 0.3 Jul. 21, 2009

SKEW_EO

DEV

MOD

- 1/7

+ 1/7t

T

clk

%± 3-F

KHz200-F

-

-

-

9 / 31

LVDS Even Data

LVDS Odd Clock

LVDS Even Clock

t

SKEW_EO

T

clk

T

clk

Freq.

F

max

F

center

F

min

Product Specification

< Clock skew margin between channel >

LP156WH2

Liquid Crystal Display

F

* F

center

DEV

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3-3-3. Data Format

1) LVDS 1 Port

RCLK+

RA+/-

RB+/-

RC+/-

R3 R2

G4 G3

B5 B4

R1 R0

G2 G1

B3 B2

1

F

MOD

< Spread Spectrum >

G0 R5 R4 R3 R2 R1 R0

B1 B0 G5 G4 G3 G2 G1

DE VSYNC HSYNC B5 B4 B3 B2

Time

G0

B1

DE

VSYNC HSYNC

R5 R4

B0 G5

Ver. 0.3 Jul. 21, 2009

RD+/-

G7 G6

Previous (N-1)th Cycle Next(N+1)th Cycle

R7 R6

X B7 B6 G7 G6 R7 R6

Current (Nth) Cycle

< LVDS Data Format >

X

B7 B6

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