LG Display LM270WQ1-SLB2 Specification

( ) Preliminary Specification
(◆ ) Final Specification

LM270WQ1

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

27.0” QHD TFT LCD Title

BUYER

MODEL

SIGNATURE DATE

/

/

/

EUNPA

SUPPLIER LG Display Co., Ltd.

*MODEL LM270WQ1

SUFFIX SLB2

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

APPROVED BY

C.K. Lee / G.Manager

REVIEWED BY

S.W. Lee / Manager [C]

Y.S. Chung / Manager [M]

T.H. Shin / Manager [P]

E.S. Kim / Manager [O]

PREPARED BY

J.A. Lee / Engineer

DATE

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

Ver. 1.0 May. 31. 2012

IT/Mobile Development Division 1

LG Display Co., Ltd

1 / 32

Product Specification

Contents

LM270WQ1

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 CONNECTIONS

3-3 LVDS CHARACTREISTICS

3-4 SIGNAL TIMING SPECIFICATIONS

3-5 SIGNAL TIMING WAVEFORMS

3-6 COLOR INPUT DATA REFERNECE

3-7 POWER SEQUENCE & DIP CONDITION FOR LCD MODULE

4 OPTICAL SPECIFICATIONS

5 MECHANICAL CHARACTERISTICS

Page

1

2

3

4

5

6

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8

11

14

15

16

17

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25

6 RELIABLITY

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

9-1 MOUNTING PRECAUTIONS

9-2 OPERATING PRECAUTIONS

9-3 ELECTROSTATIC DISCHARGE CONTROL

9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE

9-5 STORAGE

9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM

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Product Specification

RECORD OF REVISIONS

LM270WQ1

Liquid Crystal Display

Revision

No

0.1 May.09. 2012 - First Draft (Preliminary)

0.2 May.22. 2012 28 Updated Altitude operating condition

1.0 May.22. 2012 7 Revised LED Pin string Voltage(Min.)

Revision

Date

Page Description

8 Revised the Pin Configuration

10 Updated Backlight Connector Pin Configuration Note

26,27 Updated Mechanical Front & Rear View

31 Updated Operating precautions

Final Specifications.

Ver. 1.0 May. 31. 2012

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LM270WQ1

Liquid Crystal Display

Product Specification

1. General Description

LM270WQ1 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 active display area with QHD resolution (2560 vertical by 1440
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 8-bit gray scale signal for each dot, thus, presenting a palette of more than

16.7M colors. It has been designed to apply the 8-bit 4port LVDS interface.
It is intended to support displays where high brightness, super wide viewing angle,
high color saturation, and high color are important.

Mini-LVDS (RGB)

Gate Driver Circuit

G1440

S1 S2560

G1

TFT - LCD Panel

(2560 × RGB × 1440 pixels)

LVDS
2Port

LVDS
2Port

MSTAR
Select

Bit
Select

ODC
Select

+12.0V

CN2

(41pin)

CN1

(51pin)

EEPROM

I2C

Timing

Controller

Logic Power

3.3V / 1.8V

Power

Circuit Block

Vled 4ch

B/L System (White LED)

General Features

Active Screen Size 27.0 inches(68.47cm) diagonal

Outline Dimension 630.0(H) x 368.2(V) x 14.9(D) mm(Typ.)

Pixel Pitch 0.2331 mm x 0.2331 mm

Source Driver Circuit

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

Color Depth 16.7M colors, 8Bit

Luminance, White 350 cd/m

2

(Center 1Point, Typ.)

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

Power Consumption

Total 35.3 Watt (Typ.)
(9.6 Watt @VLCD, 25.7 Watt w/o driver)

Weight 3,470g (Typ.)

Display Operating Mode Transmissive mode, normally black

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

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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

LM270WQ1

Liquid Crystal Display

Parameter Symbol

Power Input Voltage

Operating Temperature

Storage Temperature

Operating Ambient
Humidity

Storage Humidity

VLCD -0.3 14 Vdc at 25  2°C

TOP 0 50

TST -20 60

HOP 10 90 %RH

HST 10 90 %RH

Values

Units Notes

Min Max

°C

°C

1, 2

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. Maximum Storage Humidity is up to 40℃, 70% RH only for 4 corner light leakage Mura.

3. Storage condition is guaranteed under packing condition

FIG. 1 Temperature and relative humidity

90%

60

60%

Wet Bulb

50

Temperature [C]

40

30

20

10

0

10 20 30 40 50 60 70 80 0 -20

Dry Bulb Temperature [C]

Ver. 1.0 May. 31. 2012

40%

10%

Storage

Operation

Humidity

[(%)RH]

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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 LED/Backlight, is typically
generated by a LED Driver. The LED Driver is an external unit to the LCDs.

Table 2-1. ELECTRICAL CHARACTERISTICS

Values

Parameter Symbol

Min Typ Max

MODULE :

Power Supply Input voltage VLCD 11.6 12.0 12.4 Vdc

Permissive Power Input Ripple VdRF - 400 mVp-p

Unit Notes

Power Supply Input Current

Power Consumption

Rush Current IRUSH - - 3.0 A 3

Note :

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

FIG.2 Pattern for Electrical characteristics

ILCD-MOSAIC - 800 1040 mA 1

ILCD-WHITE - 1150 1495 mA 2

PLCD-MOSAIC - 9.6 12.48 Watt 1

PLCD-WHITE 13.8 17.94 Watt 2

=12.0V, 25  2°C,fV=60Hz

LCD

power consumption measurement power input ripple

White : 255Gray
Black : 0Gray

Maximum current pattern

Mosaic Pattern(8 x 6)

Ver. 1.0 May. 31. 2012

White Pattern

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Product Specification

Table 2-2. LED BAR ELECTRICAL CHARACTERISTICS

LM270WQ1

Liquid Crystal Display

Parameter Symbol

Unit Notes

Min. Typ. Max.

LED String Current Is 10 120 125 mA 1,2,5

LED String Voltage Vs 50.2 53.6 57.0 V 1,5

Power Consumption PBar - 25.7 27.3 Watt 1,2,4

LED Life Time LED_LT 30,000 - - Hrs 3

Notes) The LED Bar consists of 68 LED packages, 4 strings (parallel) x 17 packages (serial)

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.

1. Specified values are for a single LED bar.

2. The specified current is defined as the input current for a single LED string with 100% duty cycle.

3. The LED life time is defined as the time when brightness of LED packages become 50% or less
than the initial value under the conditions at Ta = 25±2°C and LED string current is typical value.

4. The power consumption shown above does not include loss of external driver.

Values

The typical power consumption is calculated as P
The maximum power consumption is calculated as P

= Vs(Typ.) x Is(Typ.) x No. of strings.

Bar

= Vs(Max.) x Is(Typ.) x No. of strings.

Bar

5. LED operating conditions are must not exceed Max. ratings.

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LM270WQ1

Liquid Crystal Display

Product Specification

3-2. Interface Connections

This LCD module employs two kinds of interface connection, 51-pin and 41-pin connectors are
used for the module electronics and 14-pin connectors are used for the integral backlight system.

3-2-1. LCD Module (CN1, CN2)

- LCD Connector(CN1): IS050-C51B-C39-A(manufactured by UJU) or FI-RE51S­HF(manufactured by JAE) or compatible. Refer to below and next Page table.

- Mating Connector : FI-RE51HL(JAE) or compatible

Table 3-1. MODULE CONNECTOR(CN1) PIN CONFIGURATION

No Symbol Description No Symbol Description

1 GND Ground 27 Bit Select

2 NC No Connection 28 R2AN SECOND LVDS Receiver Signal (A-)

3 NC No Connection 29 R2AP SECOND LVDS Receiver Signal (A+)

4 NC No Connection 30 R2BN SECOND LVDS Receiver Signal (B-)

5 NC No Connection 31 R2BP SECOND LVDS Receiver Signal (B+)

6 ODC Select ‘H’ or NC = Enable , ‘L’ = Disable 32 R2CN SECOND LVDS Receiver Signal (C-)

7 LVDS Format

8 NC No Connection 34 GND Ground

9 PWM_OUT

10 NC No Connection 36 R2CLKP

11 GND Ground 37 GND Ground

12 R1AN FIRST LVDS Receiver Signal (A-) 38 R2DN SECOND LVDS Receiver Signal (D-)

13 R1AP FIRST LVDS Receiver Signal (A+) 39 R2DP SECOND LVDS Receiver Signal (D+)

14 R1BN FIRST LVDS Receiver Signal (B-) 40 R2EN SECOND LVDS Receiver Signal (E-)
15 R1BP FIRST LVDS Receiver Signal (B+) 41 R2EP SECOND LVDS Receiver Signal (E+)
16 R1CN FIRST LVDS Receiver Signal (C-) 42 Reserved No connection or GND
17 R1CP FIRST LVDS Receiver Signal (C+) 43 Reserved No connection or GND
18 GND Ground 44 GND Ground

19 R1CLKN

20 R1CLKP

21 GND Ground 47 NC No connection
22 R1DN FIRST LVDS Receiver Signal (D-) 48 VLCD Power Supply +12.0V
23 R1DP FIRST LVDS Receiver Signal (D+) 49 VLCD Power Supply +12.0V
24 R1EN FIRST LVDS Receiver Signal (E-) 50 VLCD Power Supply +12.0V
25 R1EP FIRST LVDS Receiver Signal (E+) 51 VLCD Power Supply +12.0V
26 Reserved No connection or GND - - -

‘H’= MSTAR Concept , ‘L’=normal

Reference signal for inverter

control

FIRST LVDS Receiver Clock

Signal(-)

FIRST LVDS Receiver Clock

Signal(+)

33 R2CP SECOND LVDS Receiver Signal (C+)

35 R2CLKN SECOND LVDS Receiver Clock Signal(-)

45 GND Ground

46 GND Ground

‘H’ = 10bit , ‘L’ or NC = 8bit

SECOND LVDS Receiver Clock

Signal(+)

Notes : 1. All GND(ground) pins should be connected together to the LCD module’s metal frame.

2. All VLCD (power input) pins should be connected together.

3. All Input levels of LVDS signals are based on the EIA 644 Standard.

4. Specific pins(pin No. #2~#6) are used for internal data process of the LCD module.
If not used, these pins are no connection.

5. LVDS pin (pin No. #24,25,40,41) are used for 10Bit(D) of the LCD module.
If used for 8Bit(R), these pins are no connection.

6. Specific pin No. #44 is used for “No signal detection” of system signal interface.
It should be GND for NSB(No Signal Black) during the system interface signal is not.
If this pin is “H”, LCD Module displays AGP(Auto Generation Pattern).

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LM270WQ1

Liquid Crystal Display

Product Specification

- LCD Connector(CN2): IS050-C41B-C39-A(manufactured by UJU) or FI-RE41S­HF(manufactured by JAE) or compatible. Refer to below table.

- Mating Connector : FI-RE41HL or compatible.

Table 3-2. MODULE CONNECTOR(CN2) PIN CONFIGURATION

No Symbol Description No Symbol Description

1 NC No connection(Reserved) 22 R3EN THIRD LVDS Receiver Signal (E-)

2 NC No connection 23 R3EP THIRD LVDS Receiver Signal (E+)

3 NC No connection 24 GND Ground

4 NC No connection 25 GND Ground

5 NC No connection 26 R4AN FORTH LVDS Receiver Signal (A-)

6 NC No connection 27 R4AP FORTH LVDS Receiver Signal (A+)

7 NC No connection 28 R4BN FORTH LVDS Receiver Signal (B-)

8 NC No connection 29 R4BP FORTH LVDS Receiver Signal (B+)

9 GND Ground 30 R4CN FORTH LVDS Receiver Signal (C-)

10 R3AN THIRD LVDS Receiver Signal (A-) 31 R4CP FORTH LVDS Receiver Signal (C+)

11 R3AP THIRD LVDS Receiver Signal (A+) 32 GND Ground

12 R3BN THIRD LVDS Receiver Signal (B-) 33 R4CLKN FORTH LVDS Receiver Clock Signal(-)

13 R3BP THIRD LVDS Receiver Signal (B+) 34 R4CLKP

14 R3CN THIRD LVDS Receiver Signal (C-) 35 GND Ground

15 R3CP THIRD LVDS Receiver Signal (C+) 36 R4DN FORTH LVDS Receiver Signal (D-)

16 GND Ground 37 R4DP FORTH LVDS Receiver Signal (D+)

17 R3CLKN

18 R3CLKP

19 GND Ground 40 GND Ground

20 R3DN THIRD LVDS Receiver Signal (D-) 41 GND Ground

21 R3DP THIRD LVDS Receiver Signal (D+) -

THIRD LVDS Receiver Clock

Signal(-)

THIRD LVDS Receiver Clock

Signal(+)

38 R4EN FORTH LVDS Receiver Signal (E-)

39 R4EP FORTH LVDS Receiver Signal (E+)

FORTH LVDS Receiver Clock

Signal(+)

Notes : 1. All GND(ground) pins should be connected together to the LCD module’s metal frame.

2. LVDS pin (pin No. #22,23,38,39) are used for 10Bit(D) of the LCD module.
If used for 8Bit(R), these pins are no connection.

[CN1]

CN1 CN2

#1

#5

1

#1

#4

1

- Part/No. : IS050-C51B-C39-A(UJU)

- Mating connector : FI-RE51HL
(Manufactured by JAE)
[CN2]

- Part/No. : IS050-C41B-C39-A(UJU)

- Mating connector : FI-RE41HL

#1

#5

1

#1

#4

1

(Manufactured by JAE)

Rear view of LCM

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LM270WQ1

Liquid Crystal Display

Product Specification

3-2-2. BACKLIGHT CONNECTOR PIN CONFIGURATION(CN3)

The LED interface connector is a model SM06B-SHJH(HF), wire-locking type manufactured by JST.
The mating connector is a SHJP-06V-S(HF) or SHJP-06-A-K(HF) and Equivalent.
The pin configuration for the connector is shown in the table below.

Table 3-3. LED CONNECTOR PIN CONFIGURATION

Pin Symbol Description

1 FB1 Channel1 Current Feedback

2 FB2 Channel2 Current Feedback

3 VLED LED Power Supply

4 VLED LED Power Supply

5 FB3 Channel3 Current Feedback

6 FB4 Channel4 Current Feedback

#6 #1

Rear view of LCM

Figure 3. Backlight connector view

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