LG LP-156WH2-TLB1 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
TLB1Suffix

SIGNATUREAPPROVED BY

/

/

/

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

Ver. 0.1 Nov. 29, 2008

APPROVED BY

APPROVED BY

K. S. Kwon / S.Manager

K. S. Kwon / S.Manager

REVIEWED BY

REVIEWED BY

J. H. Park / Manager

J. H. Park / Manager

PREPARED BY

PREPARED BY

B. T. Jang / Engineer

B. D. Jun / Engineer

Products Engineering Dept.

LG Display Co., Ltd

SIGNATURE

SIGNATURE

1 / 30

Product Specification

Contents

LP156WH2

Liquid Crystal Display

ITEMNo

COVER
CONTENTS
RECORD OF REVISIONS
GENERAL DESCRIPTION1
ABSOLUTE MAXIMUM RATINGS2

ELECTRICAL SPECIFICATIONS3
ELECTRICAL CHARACTREISTICS 3-1

INTERFACE CONNECTIONS 3-2
LVDS SIGNAL TIMING SPECIFICATION 3-3
SIGNAL TIMING SPECIFICATIONS 3-3
SIGNAL TIMING WAVEFORMS 3-4
COLOR INPUT DATA REFERNECE 3-5

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POWER SEQUENCE 3-6
OPTICAL SFECIFICATIONS4

Page

1
2
3
4
5

6
7

8-9

10
10
11
12

13-15

MECHANICAL CHARACTERISTICS5
APPENDIX. LPL PROPOSAL FOR SYSTEM COVER DESIGN A
RELIABLITY6
INTERNATIONAL STANDARDS7
SAFETY 7-1
EMC 7-2
PACKING8
DESIGNATION OF LOT MARK 8-1
PACKING FORM 8-2
PRECAUTIONS9
APPENDIX. Enhanced Extended Display Identification Data A

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20-22

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24
24

25

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26-27
28-30

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Product Specification

RECORD OF REVISIONS

LP156WH2

Liquid Crystal Display

DescriptionPageRevision DateRevision No

First Draft (Preliminary Specification)-Oct. 24. 20080.0
Updated Power Consumption (B/L input power added Driver power.) 4Nov.29. 20080.1
Updated Electrical Characteristics

6

(added LED electrical characteristics)
Updated Power sequence(added LED sequence)12
Updated Front view drawing18
Updated Rear view drawing19

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EDID

ver

0.0

Ver. 0.1 Nov. 29, 2008

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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 Light Emitting Diode (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(768 vertical by 1366 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 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 sub-pixels, the
LP156WH1 characteristics provide an excellent flat display for office automation products such as Notebook
PC.

CN1 User connector 40 Pin

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General Features

LVDS &= Timing

Control Block

1

GIP(Gate In Panel)

POWE

R

BLOCK

EDID

BLOCK

LED

Driver

Control & Data Power 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)Luminance, White
Total 5.3 Watt(Typ.) @ LCM circuit 1.3 Watt(Typ.), B/L input 4Watt(Typ.With Driver)Power Consumption

450g (Max.)Weight
Transmissive mode, normally whiteDisplay Operating Mode
Hard Coating(3H), Anti-Glare treatment of the front polarizerSurface Treatment

YesRoHS Comply

768

Source Driver Circuit

1

TFT-LCD Panel

(1366 X 768)

LED Backlight Ass’y

8LEDs X 6 strings

1366

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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

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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 :

ICC Power Supply Input Current

BACKLIGHT : ( with LED Driver)

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PWM High Level Voltage
PWM Low Level Voltage
LED_EN High Voltage
LED_EN Low Voltage

Note)

1. 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.

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PWM_H

PWM_L

LED_EN_H

LED_EN_L

Values

MaxTypMin

mA1500--ICC_P Power Supply Inrush Current

mATBD--ILED_P LED Power Inrush Current

kΩ604020ZPWM PWM Impedance

NotesUnit

V3.63.33.0VCC Power Supply Input Voltage

1mA445385­1W1.51.3-PCC Power Consumption

2Ω11010090ZLVDS LVDS Impedance

V20.012.07.0VLED LED Power Input Voltage

3mATBD340- ILED LED Power Input Current
3WTBD4-PLED LED Power Consumption

4%100-12.5- PWM Dimming (Duty) Ratio

5Hz1000-200FPWM PWM Frequency

V53.32.1V
V0.8-0V
V53.32.1V
V0.8-0V

6Hrs--15,000 Life Time

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

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

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

5. 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.

6. The life time is determined as the time at which brightness of LED 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 21mA.

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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 connectionNC1
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 ConnectionNC34
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, SW0624 (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

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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. 0.1 Nov. 29, 2008

SKEW_EO

DEV

MOD

- 1/7

+ 1/7t

T

clk

%± 3-F

KHz200-F

-

-

-

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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. 0.1 Nov. 29, 2008

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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LP156WH2

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 LVDS Tx/Rx for its proper operation.

Table 6. TIMING TABLE

NoteUnitMaxTypMinSymbolITEM

FrequencyDCLK

Period

Hsync

Vsync

Horizontal back porch

Data

Enable

3-5. Signal Timing Waveforms

Horizontal front porch

Vertical back porch

Vertical front porch

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Data Enable, Hsync, Vsync

DCLK

tCLK

0.5 Vcc

f

CLK

t

HP

Width-Active

WHA

Width-Active

WVA

HBP

HFP

t

VBP

t

VFP

High: 0.7VCC

Low: 0.3VCC

-

158615261470

403223tWH Width

136613661366t

801790779tVP Period

852tWV Width

768768768t

1248072t

48488t

20148

531

MHz-72.3

tCLK

tHP

tCLK

tHP

Condition : VCC =3.3V

t

HP

Hsync

t

WH

t

HBP

tWHA

Data Enable

t

VP

t

WV

Vsync

t

VBP

tWVA

Data Enable

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t

t

HFP

VFP

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