LG Display LM270WQ1-SDDA Specification

( ) Preliminary Specification
(◆ ) Final Specification

Product Specification

Product Specification

SPECIFICATION

FOR

APPROVAL

27.0” QHD TFT LCDTitle

LM270WQ1

Liquid Crystal Display

BUYER

MODEL

SIGNATURE DATE

/

/

/

HP

SUPPLIER LG Display Co., Ltd.

*MODEL LM270WQ1

SUFFIX SDDA

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

J.H. Park / G.Manager

REVIEWED BY

S.W. Lee / Manager [C]

Y.S. Chung / Manager [M]

D.H. Kang / Manager [P]

PREPARED BY

J.H. Shin / Engineer

DATE

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

Ver. 1.0 Jun. 13. 2011

Monitor Product Engineering Dept.

LG Display Co., Ltd

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LM270WQ1

Liquid Crystal Display

Product Specification

Contents

No ITEM Page

COVER

CONTENTS

RECORD OF REVISIONS

1 GENERAL DESCRIPTION

2 ABSOLUTE MAXIMUM RATINGS

3 ELECTRICAL SPECIFICATIONS

3-1 ELECTRICAL CHARACTREISTICS

3-2 INTERFACE CONNECTIONS

3-3 SIGNAL TIMING SPECIFICATIONS

3-4 SIGNAL TIMING WAVEFORMS

3-5 COLOR INPUT DATA REFERNECE

3-6 POWER SEQUENCE

4 OPTICAL SFECIFICATIONS

5 MECHANICAL CHARACTERISTICS

6 RELIABLITY

1

2

3

4

5

6

6

9

11

12

13

14

16

22

25

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 28

9-1 MOUNTING PRECAUTIONS 28

9-2 OPERATING PRECAUTIONS 28

9-3 ELECTROSTATIC DISCHARGE CONTROL 29

9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE 29

9-5 STORAGE 29

9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM 29

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26

26

30

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27

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Product Specification

RECORD OF REVISIONS

LM270WQ1

Liquid Crystal Display

Revisio

n No

0.0 Aug. 10. 2010 - First Draft(Preliminary)

0.1 Sep. 13. 2010 6 Preliminary (Updated Power content)

0.2 Oct. 18. 2010

0.3 Dec. 06. 2010

0.4 Mar. 23. 2011

0.5 May. 17. 2011 23 Update Front View

Revision Date Page Description

4,6,8,22 Updated Power Consumption & Weight

Deleted #1(DDC_SCL),#2(DDC_SDA) of module

9

23,24

4

8 Updated LED Bar Electrical Characteristics (Min, Max Spec)

9

27 Updated lot mark for year

pinmap(CN1)
because EDID is mounted on system

Updated Mechanical Drawing

-Specified LED wire length, COF location

-Corrected numerical error and added tolerance

-Removed the case-top bottom tape

Deleted EEPROM for EDID on the block diagram
Updated Total Power Consumption (Max.)

Back to original pinmap for #1(DDC_SCL),#2(DDC_SDA) of
module pinmap(CN1)

1.0 Jun. 13. 2011 Final Specifications.

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LM270WQ1

Liquid Crystal Display

Product Specification

1. General Description

LM270WQHD is a Color Active Matrix Liquid Crystal Display with Light Emitting Diode ( White LED) backlight
system without LED driver. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive type display operating in the normally black mode. It has a 27inch diagonally measured
ac t iv e di s pl a y a re a wit h Q H D r es o lu t io n (2560 v er tic a l by 1440 hor i zo nt a l p ixe l ar ra y)
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 10-bit gray scale signal for each dot,
thus, presenting a palette of more than 1.07B colors with FRC (Frame Rate Control).
It has been designed to apply the 10-bit 4Lane Display port interface.
It is in te n d e d to su pp or t d i s p l a ys w h e r e hi gh br ig h t n es s, s u p er wi de vi ew i n g a n gl e,
high color saturation, and high color are important.

Mini-LVDS (RGB)

Source Driver Circuit

S1 S2560

TFT - LCD Panel

(2560 × RGB × 1440 pixels)

B/L System (White LED)

Main Link

4 Lane

AUX CH

HPD

DP function

Logic Power

3.3V

LCD Power

12 V

CN1

(30pin)

Flash

memory

SPI

Timing

Controller

Logic Power

3.3V / 1.2V

Power Circuit

Power
Enable
(Video On)

Block

Vled

General Features

Active Screen Size 27.0 inches(68.47cm) diagonal

Outline Dimension 630.0(H) x 376.13(V) x 21.8(D) mm(Typ.)

Pixel Pitch 0.2331 mm x 0.2331 mm

Pixel Format 2560 horiz. By 1440 vert. Pixels RGB stripes arrangement

Color Depth 1.07 Billion colors, 8Bit with A-FRC

Luminance, White 380 cd/m

2

(Center 1Point, Typ.)

Viewing Angle(CR>10) View Angle Free (R/L 178(Typ.), U/D 178(Typ.))

Power Consumption

Total 90.69 Watt (Max.)
(15.36 Watt @VLCD, Max 75.33 Watt_Duty 100% of DC 310 mA_w/o driver)

Weight 4,600g (typ.)

Display Operating Mode Transmissive mode, normally black

Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer

HDCP HDCP key implemented in Tcon (DP628)

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LM270WQ1

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

Power Input Voltage

Operating Temperature

Storage Temperature

Operating Ambient Humidity

Storage Humidity

VLCD -0.3 14 Vdc

VDPLOGIC -0.5 4 Vdc

TOP 0 50 °C

TST -20 60 °C

HOP 10 90 %RH

HST 10 90 %RH

Values

Units Notes

Min Max

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.

2. Storage condition is guaranteed under packing condition

90%

60

60%

40

50

40%

Humidity [(%)RH]

10%

Wet Bulb
Temperature [C]

30

20

10

0

at 25  2°C

at 25  2°C

1, 2

Storage

Operation

10 20 30 40 50 60 70 800-20

Dry Bulb Temperature [C]

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LM270WQ1

Liquid Crystal Display

Product Specification

3. Electrical Specifications

3-1. Electrical Characteristics

It requires two power inputs. One is employed to power the LCD electronics and to drive the TFT array and
liquid crystal. The second input power for the DP Rx.

Table 2-1-1. ELECTRICAL CHARACTERISTICS (Normal Mode)

Values

Parameter Symbol

Min Typ Max

MODULE :

Power Supply Input voltage VLCD 11.4 12.0 12.6 Vdc

Permissive Power Input Ripple VRF_VLCD - - 400 mVp-p

Unit Notes

Power Supply Input Current ILCD

Power Consumption PLCD

Rush Current IRUSH_VLCD - - 3.0 A 3

DP Logic Input Voltage VCC_L_IN 3.13 3.3 3.47 Vdc

Permissive Logic Input Ripple VRF_VCC_L_IN - - 100 mVp-p

DP Logic Input Current I_VCC_L_IN

DP Logic Power Consumption P_VCC_L_IN 1.0 Watt

DP Rush Current IRUSH_VCC_L_IN - - 1.0 A 3

- 890 1025 mA 1

- 1280 1475 mA 2

- 10.68 12.30 Watt 1

15.36 17.70 Watt 2

300 mA 1

300 mA 2

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Liquid Crystal Display

Product Specification

Note :

1. The specified current and power consumption are under the V
whereas mosaic pattern(8 x 6) is displayed and fVis the frame frequency.

2. The current is specified at the maximum current pattern.

3. The duration of rush current is about 2ms and rising time of power Input is 1ms(min.).

White : 255Gray
Black : 0Gray

=12.0V, 25  2°C,fV=60Hz condition

LCD

Maximum current pattern

LM270WQ1

Mosaic Pattern(8 x 6)

White Pattern

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Product Specification

Table 2-2. LED Bar ELECTRICAL CHARACTERISTICS

LM270WQ1

Liquid Crystal Display

Items Symbol

LED String Current I

LED String Voltage V

LED String Power P

BL Power P

LED Life Time LED_LT (39,000) - Hrs 4,6

LED driver design guide

: The design of the LED driver must have specifications for the LED in LCD Assembly.

The performance of the LED in LCM, for example life time or brightness, is extremely influenced by
the characteristics of the LED driver.
So all the parameters of an LED driver should be carefully designed and output current should be
Constant current control.
Please control feedback current of each string individually to compensate the current variation
among the strings of LEDs.
When you design or order the LED driver, please make sure unwanted lighting caused by
the mismatch of the LED and the LED driver (no lighting, flicker, etc) never occurs.
When you confirm it, the LCD module should be operated in the same condition as installed in
your instrument.

Spec

Min Typ Max

S

S

S

BL

- 310 330 mA Ta=25℃ 1

30.5 35.5 40.5 V

9.46 11.01 12.56 W 5,6

- 66.03 75.33 W 3,5,6

Unit Remark Notes

2,6

Ta=25℃, at Duty 100%

of DC 310 mA

※ Specified values are for a single LED bar including Left & Right Bar.

1. The specified current is input LED chip 100% duty current.

2. The specified voltage is input LED string and Bar voltage at typical 310 mA 100% duty current.

3. The specified power consumption is input BL power consumption at typical 310 mA 100% duty current.

4. The life is determined as the time at which luminance of the LED is 50% compared to that of initial

value at the typical LED current on condition of continuous operating at 25  2°C.

5. The LED power consumption shown above does not include loss of external driver.
The used LED BL current is the LED typical current.
String Power Consumption is calculated with PS = VSx typical current (mA)
BL Power Consumption is calculated with PBL= Ps x the number of string

6. LED operating DC Forward Current must not exceed LED Max Ratings.

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Product Specification

3-2. Interface Connections

3-2-1. LCD Module

- LCD Connector(CN1). : FI-X30SSL-HF (manufactured by JAE)
The pin configuration for the 30 pin connector is shown in the table below.

Table 3 MODULE CONNECTOR(CN_SIG) PIN CONFIGURATION

LM270WQ1

Liquid Crystal Display

DescriptionSymbolPin No.

DDC_SCL1

GND3

AUX_CH N4

GND6

Lane0P7

Lane0N8

GND9

GND12

DDC for Clock

DDC for DataDDC_SDA2

High Speed Ground for Auxiliary
Channel

Component Signal for Auxiliary
Channel

True Signal for Auxiliary ChannelAUX_CH P5

High Speed Ground for Main
Link 0

True Signal for Main Link 0

Component Signal for Main Link 0

High Speed Ground for Main
Link 1

True Signal for Main Link 1Lane1P10

Component Signal for Main Link 1Lane1N11

High Speed Ground for Main
Link 2

Pin No.

16

17

18

19

20

21

22

23

24

25

26

27

Symbol

Lane3P

Lane3N

GND

VIDEO_
ON

HPD

GND

GND

GND

GND

VLCD

VLCD

True Signal for Main Link 3

Component Signal for Main Link 3

High Speed Ground

Audio output from DP RXSPDIF

Video status from DP RX

Hot Plug Detect Signal

GND for main power

GND for main power

GND for main power

GND for main power

12V for LCM main power

12V for LCM main power

Description

True Signal for Main Link 2Lane2P13

Component Signal for Main Link 2Lane2N14

GND15

High Speed Ground for Main
Link 3

Notes : 1. Connector

2.1 Connector(Receptacle) : FI-X30SSL-HF(JAE) or 20389-Y30E-01(I-PEX)

2.2 Mating Connector(Plug) : FI-X30HL(JAE) or 20385-Y30T-12F(I-PEX)

Ver. 1.0 Jun. 13. 2011

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29

30

VLCD

VLCD

VCC_L_IN

12V for LCM main power

12V for LCM main power

3.3V for DP TCON power

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