LG LP-156WH4-TLA1 Service manual

LP156WH4

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

)

(
(

Preliminary Specification

◆

)

Final Specification

15.6” HD TFT LCDTitle

NECCustomer

MODEL

*When you obtain standard approval,

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SIGNATUREAPPROVED BY

/

/

/

please use the above model name without suffix

APPROVED BY

APPROVED BY

G. J. Han / S.Manager

REVIEWED BY

REVIEWED BY

B. T. Jang / Manager

C. H. Lee / Manager

PREPARED BY

PREPARED BY

K. M. Lee / Engineer

G. H. Lee / Engineer

LG Display Co., Ltd.SUPPLIER
LP156WH4*MODEL
TLA1Suffix

SIGNATURE

SIGNATURE

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

Ver. 0.3 Nov. 08, 2010

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Product Specification

Contents

LP156WH4

Liquid Crystal Display

ITEMNo

COVER
CONTENTS
RECORD OF REVISIONS

1
2

3

4

GENERAL DESCRIPTION
ABSOLUTE MAXIMUM RATINGS

ELECTRICAL SPECIFICATIONS
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

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3-6

OPTICAL SFECIFICATIONS

Page

1
2
3
4
5

6~7

8

9-10

11
11
12
13

14-16

5

Ver. 0.3 Nov. 08, 2010

MECHANICAL CHARACTERISTICS
RELIABLITY6
INTERNATIONAL STANDARDS7
SAFETY7-1
EMC7-2
Environment7-3
PACKING8
DESIGNATION OF LOT MARK8-1
PACKING FORM8-2
APPENDIX-1,2,3A
PRECAUTIONS9
APPENDIX. Enhanced Extended Display Identification Data A

17-20

21

22
22
22

23

23
24-26
27-28
29-31

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Product Specification

RECORD OF REVISIONS

LP156WH4

Liquid Crystal Display

DescriptionPageRevision DateRevision No

First Draft (Preliminary Specification)-July. 14, 20100.0
Update Mating Connector 8Aug. 31, 20100.1

Update weight typical value / Surface Treatment4Nov. 08, 20100.3
Update Electric Characteristics table6
Update Notes7
Update Connector Type8
Change T1 time13
Update Optical Characteristics table14
Update weight typical value17
Update Drawing18
Update Drawing20
Update Environment Test Condition21

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Update Packing Information23-26

Update EDID(Checksum : BB→79)29-31

EDID

ver

0.0

0.1Update EDID(Checksum : 99→BB)29-31Sep. 27, 20100.2

0.2

Ver. 0.3 Nov. 08, 2010

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LP156WH4

Liquid Crystal Display

Product Specification

1. General Description

The LP156WH4 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 withHD
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 LP156WH4 has been designed to apply the interface method that enables low power, high
speed, low EMI. The LP156WH4 is intended to support applicationswhere thin thickness, low power are
critical factors and graphic displays are important. In combination with the vertical arrangement of the sub­pixels, the LP156WH4 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

EEPROM Block

for EDID

for EDID

LVDS

1port

VCC

VLED

LED_EN

PWM

Control & Data Power

Timing Control

Timing Control

Block

Block

DVCC

Power

Power

Block

Block

LED Driver

LED Driver

Block

Block

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 4.2 W(Typ.) Logic : 0.9W (Typ.@ Mosaic), B/L : 3.3W (Typ.@ VLED 12V )Power Consumption
435g(typ.), 450g (Max.)Weight
Transmissive mode, normally whiteDisplay Operating Mode
Hard Coating(3H), Glare treatment of the front polarizer (Reflectivity 4.5%)Surface Treatment
YesRoHSComply
Yes for allBFR / PVC / As Free

CLKs

VGH, VGL, GMA

EPI

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

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LP156WH4

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

60

Values

MaxMin

90%80%

60%

40%

20%

10%

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

50

40

30

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 Nov. 08, 2010

10

20 30 40 50

Dry Bulb Temperature [℃]

60 70 800

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LP156WH4

Liquid Crystal Display

Product Specification

3. Electrical Specifications
3-1. Electrical Characteristics

The LP156WH4 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

LOGIC :

Power Supply Input Current

(Even)

BACKLIGHT : ( with LED Driver)

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SymbolParameter

Black 3mA

ICC_max

-

Values

MaxTypMin

380330

11010090ZLVDSLVDS Impedance

Ω

V3.63.33.0VEDIDEDID Input Voltage

mA10--IEDIDEDID Input Current

V21.012.07.0VLEDLED Power Input Voltage

mA290275-ILEDLED Power Input Current

W3.53.3-PLEDLED Power Consumption

NotesUnit

1V3.63.33.0VCCPower Supply Input Voltage
2mA320275-ICCMosaic

2W1.10.9-PCCPower Consumption
4mA1500--ICC_PPower Supply Inrush Current
5

6
7
7

PWM Jitter

PWM High Level Voltage
PWM Low Level Voltage

Ver. 0.3 Nov. 08, 2010

-

PWM_H

PWM_L

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mA1500--ILED_PLED Power Inrush Current

%100-5PWM Duty Ratio

%0.2-0
kΩ604020ZPWMPWM Impedance
Hz1000-200FPWMPWM 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

8
9

10

11

12Hrs--12,000Life Time

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LP156WH4

Liquid Crystal Display

Product Specification

Note)

1. The measuring position is the connector of LCM and the test condition is 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.

(Max current pattern is Black, measured by Multi-Meter=EVEN)

3. This spec. is the max load condition for the cable impedance designing. (Measured by multi-meter=EVEN)

4. The below figures are the measuring Vcccondition and the Vcccontrol block by LGD used.
The Vcccondition is same the minimum of T1 at Power on sequence.

Rising time
Vcc

0V

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5. This impedance value is needed to proper display and measuredform LVDS Tx to the mating connector.

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

7. 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.

8. 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

7~21.0V

90%

0V

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

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

11. 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.

12. 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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10%

0.5ms

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LP156WH4

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.

Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)

NotesDescriptionSymbolPin

31
32
33

35
36
37
38
39
40

No ConnectionNC1
LCD Logic and driver power (3.3V Typ.)VCC2
LCD Logic and driver power (3.3V Typ.)VCC3
DDC Power (3.3V)V EEDID4
No ConnectionNC5
DDC ClockClkEEDID6
DDC DataDATA EEDID7
Negative LVDS differential data inputORX0-8
Positive LVDS differential data inputORX0+9
LCM GroundGND10
Negative LVDS differential data inputORX1-11
Positive LVDS differential data inputORX1+12
LCM GroundGND13
Negative LVDS differential data inputORX2-14
Positive LVDS differential data inputORX2+15
LCM GroundGND16
Negative LVDS differential clock inputORXC-17

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NC No Connection21

LED_EN

NC

Positive LVDS differential clock inputORXC+18
LCM GroundGND19
No ConnectionNC20

LCM GroundGND19
No ConnectionNC23
No ConnectionNC24
LCM GroundGND19
No ConnectionNC26
No ConnectionNC27
LCM GroundGND19
No ConnectionNC29
No ConnectionNC30
LCM Ground(LED Backlight Ground)GND
LCM Ground(LED Backlight Ground)GND
LCM Ground(LED Backlight Ground)GND
No ConnectionNC34
System PWM Signal input for dimmingPWM

LED Backlight On/Off
No Connection

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

[Interface Chip]

1. LCD :
SiW, SW0624(LCD Controller)
Including LVDS Receiver.

2. System : THC63LVDF823A or equivalent

* Pin to Pin compatible with LVDS

[Connector]

Hirose KN38A-40S-0.5H

[Mating Connector]

20453-040T, I-Pexor 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

LP156WH4

Liquid Crystal Display

Description

LVDS Common mode Voltage
LVDS Input Voltage Range

3-3-2. AC Specification

LVDS Clock to Data Skew Margin

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Symb

ol

CM

IN

SKEW

SKEW

-600

NotesUnitMaxMin

-mV600100|VID|LVDS Differential Voltage

-V1.80.6V

-V2.10.3V

NotesUnitMaxMinSymbolDescription

ps+ 400-400t

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 Nov. 08, 2010

SKEW_EO

DEV

MOD

-1/7

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+ 1/7t

T

clk

%± 3-F

KHz200-F

-

-

-

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Freq.

F

max

F

center

F

min

Product Specification

< Clock skew margin between channel >

LP156WH4

Liquid Crystal Display

F

* F

center

DEV

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3-3-3. Data Format

1) LVDS 1 Port

RCLK+

RA+/-

RB+/-

RC+/-

RD+/-

R3 R2

G4 G3

B5 B4

G7 G6

R1 R0

G2 G1

B3 B2

R7 R6

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

X B7 B6 G7 G6 R7 R6

Time

G0

B1

DE

VSYNC HSYNC

X

R5 R4

B0 G5

B7 B6

Previous(N-1)thCycle Next(N+1)thCycle

< LVDS Data Format >

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Current(Nth) Cycle

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