LG Display LM270WF5-SLA1 Specification

(●) Preliminary Specification

g

H.S. KIM / Manager [C]

g

( ) Final Specification

LM270WF5

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

27” Full HD TFT LCDTitle

BUYER

MODEL

APPROVED BY

/

/

/

General

SIGNATURE

DATE

SUPPLIER LG Display Co., Ltd.

*MODEL LM270WF5

SUFFIX SLA1

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

K.G PARK / G.Manager

REVIEWED BY

Y.S. CHUNG / Manager [M]

D.H. KANG / Manager [P]

PREPARED BY

S.H. KIM / En

ineer

SIGNATURE

DATE

Please return 1 copy for your confirmation with

your signature and comments.

Ver 0.1 Dec. 22. 2011

MNT Products Engineering Dept.

LG Display Co., Ltd.

1/ 32

LM270WF5

7

INTERNATIONAL STANDARDS

29

Liquid Crystal Display

Product Specification

Contents

No ITEM Page

COVER 1

CONTENTS 2

RECORD OF REVISIONS 3

1 GENERAL DESCRIPTION 4

2 ABSOLUTE MAXIMUM RATINGS 5

3 ELECTRICAL SPECIFICATIONS 6

1) ELECTRICAL CHARACTERISTICS 6

2) INTERFACE CONNECTIONS 9

3) SIGNAL TIMING SPECIFICATIONS 14

4) SIGNAL TIMING WAVEFORMS 15

5) COLOR INPUT DATA REFERNECE 16

6) POWER SEQUENCE 17

7) POWER DIP CONDITION 18

4 OPTICAL SPECIFICATIONS 19

5 MECHANICAL CHARACTERISTICS 25

6RELIABILITY 28

1) SAFETY 29

2) EMC 29

3) Environment 29

8PACKING 30

1) DESIGNATION OF LOT MARK 30

2) PACKING FORM 30

9 PRECAUTIONS 31

1) MOUNTING PRECAUTIONS 31

2) OPERATING PRECAUTIONS 31

3) ELECTROSTATIC DISCHARGE CONTROL 32

4) PRECAUTIONS FOR STRONG LIGHT EXPOSURE 32

5) STROAGE 32

6) HANDLING PRECAUTIONS FOR PROTECTION FILM 32

Ver 0.1 Dec. 22. 2011

2/ 32

Product Specification

RECORD OF REVISIONS

LM270WF5

Liquid Crystal Display

Revision

No

0.1 Dec. 22. 2011 - First Draft(Preliminary)

Revision Date Page Description

Ver 0.1 Dec. 22. 2011

3/ 32

LM270WF5

qy py gg g ( )

is intended to support applications where thin thickness, wide viewing angle, low power are critical factors and

Back light System (White LED)

V

LED(3ch)

Power Consumption

Total 19.20 Watt (Typ.) ( 3.30 Watt

@ V

LCD

Watt

@250cd/

㎡

)

Liquid Crystal Display

Product Specification

1. General Description

LM270WF5-SLA1 is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (White 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. It has a 27 inch diagonally measured active display area with Full
HD resolution (1080 vertical by 1920 horizontal 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 8-bit gray scale signal for each dot, thus, presenting a palette of more than 16,7M colors with
Advanced-FRC(Frame Rate Control). It has been designed to apply the interface method that enables low power,
high speed, low EMI. FPD Link or compatible must be used as a LVDS(Low Voltage Differential Signaling) chip. It

graphic displays are important. It is intended to support displays where high brightness, super wide viewing angle,
high color saturation, and high color are important.

RGB, Dclk, DE

Hsync, Vsync

(LVDS 2 port)

V

(5.0V)

LCD

CN1

(30pin)

Timing Control

Block

G1

TFT-LCD Panel

Source Driver Circuit

Power Circuit Block

(1920 × 1080 pixels)

G1080

Figure 1. Block diagram

General Features

Active Screen Size 27 inches(68.6cm) diagonal

Outline Dimension 630.0(H) x 368.2(V) x 11.7(D) mm(Typ.)

Pixel Pitch 0.3114 mm x 0.3114 mm

Pixel Format 1920 horiz. By 1080 vert. Pixels RGB stripes arrangement

S1920S1

Color Depth 16.7M colors

Luminance, White 250 cd/m

2

(Center 1 point)

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

, 15.9

Weight 3300g (Typ.)

Display Operating Mode Transmissive mode, normally Black

Surface Treatment

Hard coating(3H) & Anti-Glare treatment of the front polarizer

Ver 0.1 Dec. 22. 2011

4/ 32

Product Specification

The following are maximum values which, if exceeded

A

T

0

65℃1, 4

50

Storage

H

2. Absolute maximum ratings

may cause faulty operation or damage to the unit.

Table 1. Absolute maximum ratings

LM270WF5

Liquid Crystal Display

,

Parameter Symbol

Values

Min Max
Power Supply Input Voltage V
Operating Temperature T
Storage Temperature T
Operating Ambient Humidity H
Storage Humidity H

LCD

OP

ST

OP

ST

-0.3 +6.0 Vdc
050

-20 60
10 90 %RH
10 90 %RH

LCM Surface Temperature

(Operation)

surface

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

4. LCM Surface Temperature should be Min. 0℃ and Max. 65℃ under the VLCD=5.0V,
fV=60Hz, 25℃ ambient Temp. no humidity control and LED string current is typical value.

FIG. 2 Temperature and relative humidity

90%

Units Notes

t 25℃

°C
°C

1,2,,3

60

60%

]

Wet Bulb
Temperature [℃]

40

30

20

10

0

10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [℃]

Ver 0.1 Dec. 22. 2011

40%

10%

Operation

Humidity [(%)R

5/ 32

LM270WF5

3-1. El

V

r

600

800

1000

Fig

Liquid Crystal Display

Product Specification

3. Electrical Specifications
ectrical 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

Paramete

MODULE :

Power Supply Input Voltage V

Permissive Power Input Ripple V

Power Supply Input Current I

Power Consumption

Rush current I

Symbol Unit Notes

LCD

dRF

Min Typ Max

4.5 5 5.5

495 660 825

LCD

-

c TYP

P

P

c MAX

RUSH

2.50 3.30 4.13

- 4.00 5.00

--3

alues

400

Vdc

mVp-p 1

mA 2

mA 3

Watt 2

Watt 3

A4

Note :

1. Permissive power ripple should be measured under V

=5.0V, 25°C, fV(frame frequency)=MAX

LCD

condition and At that time, we recommend the bandwidth configuration of oscilloscope is to be under
20Mhz. See the next page.

2. The specified current and power consumption are under the V
whereas Typical Power Pattern [Mosaic] shown in the [

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

4. Maximum Condition of Inrush current :

The duration of rush current is about 5ms and rising time of power Input is 500us ± 20%.(min.).

Ver 0.1 Dec. 22. 2011

=5.0V, 25± 2°C,fV=60Hz condition

LCD

ure 3 ] is displayed.

6/ 32

Product Specification

FIG.3 Mosaic pattern & White Pattern for power consumption measurement

LM270WF5

Liquid Crystal Display

• Permissive Power input ripple (V

White pattern

• Power consumption (V

=5V, 25°C, fV (frame frequency=60Hz condition)

LCD

=5.0V, 25°C, fv (frame frequency)=MAX condition)

LCD

Black pattern

Typical power Pattern

Maximum power Pattern

Ver 0.1 Dec. 22. 2011

7/ 32

Product Specification

LED dri

among the strings of LEDs

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

Table 2-2. LED Bar ELECTRICAL CHARACTERISTICS

LM270WF5

Liquid Crystal Display

Parameter Symbol

LED String Current Is - 120 130 mA 1, 2, 5

LED String Voltage Vs 41.3 44.1 46.9 V 1, 5

Power Consumption

LED Life Time LED_LT 30,000 - - Hrs 3

PBar - 15.9 16.9 Watt 1, 2, 4

Min. Typ. Max.

Values

Notes) The LED Bar consists of 42 LED packages, 3 strings (parallel) x 14 packages (serial)

ver 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

.
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.

Unit Notes

1. The specified values are for a single LED bar.

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

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

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

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

Ver 0.1 Dec. 22. 2011

.

8/ 32

Liquid Crystal Display

6

FR2P

Plus signal of odd channel 2 (LVDS)

21

SCLKINP

Plus signal of even clock channel (LVDS)

12

SR0M

Minus signal of even channel 0 (LVDS)

27

PWM_OUT

For Control Burst frequency of Inverte

2

#1

#30

Product Specification

3-2. Interface Connections

3-2-1. LCD Module

- LCD Connector(CN1) : GT103-30S-HF15-E2500 (LSM), IS100-L30O-C23 (HJU)

- Mating Connector : FI-X30H and FI-X30HL (Manufactured by JAE) or Equivalent

Table 3. MODULE CONNECTOR(CN1) PIN CONFIGURATION

No Symbol Description No Symbol Symbol

LM270WF5

1

2

3

4

5

7

8

9

10

11

13

14

15

FR0M

FR0P

FR1M

FR1P

FR2M

GND

FCLKINM

FCLKINP

FR3M

FR3P

SR0P

GND

SR1M

Minus signal of odd channel 0 (LVDS)

Plus signal of odd channel 0 (LVDS)

Minus signal of odd channel 1 (LVDS)

Plus signal of odd channel 1 (LVDS)

Minus signal of odd channel 2 (LVDS)

Ground

Minus signal of odd clock channel (LVDS)

Plus signal of odd clock channel (LVDS)

Minus signal of odd channel 3 (LVDS)

Plus signal of odd channel 3 (LVDS)

Plus signal of even channel 0 (LVDS)

Ground

Minus signal of even channel 1 (LVDS)

16

17

18

19

20

22

23

24

25

26

28

29

30

SR1P

GND

SR2M

SR2P

SCLKINM

SR3M

SR3P

GND

NC

NC

VLCD

VLCD

VLCD

Plus signal of even channel 1 (LVDS)

Ground

Minus signal of even channel 2 (LVDS)

Plus signal of even channel 2 (LVDS)

Minus signal of even clock channel (LVDS)

Minus signal of even channel 3 (LVDS)

Plus signal of even channel 3 (LVDS)

Ground

No Connection (I2C Serial interface for LCM)

No Connection.(I2C Serial interface for LCM)

r

Power Supply +5.0V

Power Supply +5.0V

Power Supply +5.0V

Note: 1. All GND(ground) pins should be connected together and to Vss which should also be connected to

the LCD’s metal frame.

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

3. Input Level of LVDS signal is based on the IEA 664 Standard.

4. PWM_OUT signal controls the burst frequency of a inverter.
This signal is synchronized with vertical frequency.
It’s frequency is 3 times of vertical frequency, and it’s duty ratio is 50%.
If you don’t use this pin, it is no connection.

GT103-30S-HF15-E2500

Ver 0.1 Dec. 22. 2011

#1 #30

Rear view of LCM

FIG.4 Connector diagram

9/ 32

LM270WF5

16

TTL Input (B6)

D1644Power Supply for LVDS

LVDS V

CC

T

T

Liquid Crystal Display

Product Specification

Table 4. REQUIRED SIGNAL ASSIGNMENT FOR Flat Link (TI:SN75LVDS83) Transmitter

Pin # Require SignalPin Name Pin # Require SignalPin Name

1 Power Supply for TTL InputVCC 29 Ground pin for TTLGND

2 TTL Input (R7)D5 30 TTL Input (DE)D26

3 TTL Input (R5)D6 31 TTL Level clock InputTXCLKIN

4 TTL Input (G0)D7 32 Power Down InputPWR DWN

5 Ground pin for TTLGND 33 Ground pin for PLLPLL GND

6 TTL Input (G1)D8 34 Power Supply for PLLPLL VCC

7 TTL Input (G2)D9 35 Ground pin for PLLPLL GND

8 TTL Input (G6)D10 36 Ground pin for LVDSLVDS GND

9 Power Supply for TTL InputVCC 37 Positive LVDS differential data output 3

10 TTL Input (G7)D11 38 Negative LVDS differential data output 3

11 TTL Input (G3)D12 39 Positive LVDS differential clock output

12 TTL Input (G4)D13 40 Negative LVDS differential clock output

13 Ground pin for TTLGND 41 Positive LVDS differential data output 2

14 TTL Input (G5)D14 42 Negative LVDS differential data output 2

TxOUT3＋
TxOUT3－

T

CLKOUT＋

X

T

CLKOUT－

X

T

OUT2＋

X

T

OUT2－

X

15 TTL Input (B0)D15 43 Ground pin for LVDSLVDS GND

17 Power Supply for TTL InputVCC 45 Positive LVDS differential data output 1

18 TTL Input (B7)D17

19 TTL Input (B1)D18

20 TTL Input (B2)D19

46 Negative LVDS differential data output 1

47 Positive LVDS differential data output 0

48 Negative LVDS differential data output 0

T

OUT1＋

X

T

OUT1－

X

T

OUT0＋

X

T

OUT0－

X

49 Ground pin for LVDSLVDS GND21 Ground pin for TTL InputGND

22

23 TTL Input (B4)D21

24 TTL Input (B5)D22

25 TTL Input (RSVD)D23

TL Input (B3)D20

50

TL Input (R6)D27

51 TTL Input (R0)D0

52 TTL Input (R1)D1

53 Ground pin for TTLGND

26 Power Supply for TTL InputVCC 54 TTL Input (R2)D2

Notes : 1. Refer to LVDS Transmitter Data Sheet for detail descriptions.

Ver 0.1 Dec. 22. 2011

55 TTL Input (R3)D327 TTL Input (HSYNC)D24

56 TTL Input (R4)D428 TTL Input (VSYNC)D25

2. 7 means MSB and 0 means LSB at R,G,B pixel data

10 / 32

LVDS Input characteristics

l

2

Specification

t

SKEW

2

) 85

MHz > Fclk ≥65MH

400

+

400

1. DC Specification

LM270WF5

Liquid Crystal Display

Product Specification

Description Symbo

LVDS Differential Voltage |V

LVDS Common mode Voltage V

LVDS Input Voltage Range V

Change in common mode Voltage ∆V

. AC

LVDS Clock

LVDS Data

t

Description Symbol Min Max Unit Notes

LVDS Clock to Data Skew Margin

MinMaxUnitNotes

| 200 600 mV -

ID

CM

IN

CM - 250 mV -

SKEW (Fclk

= 1/T

1) 95 MHz > Fclk ≥85 MHz : - 300 ~ +300

3) 65 MHz > Fclk ≥30 MHz : - 600 ~ +600

t

SKEW

t

SKEW

t

SKEW

1.0 1.5 V -

0.7 1.8 V -

clk

T

clk

)

z : -

~

- 300 + 300 ps 95MHz > Fclk ≥ 85MHz

- 400 + 400 ps 85MHz > Fclk ≥ 65MHz

- 600 + 600 ps 65MHz > Fclk ≥ 30MHz

LVDS Clock to Clock Skew Margin
(Even to Odd)

Ver 0.1 Dec. 22. 2011

t

SKEW_EO

-1/7 + 1/7 T

clk

-

11 / 32

3. Data Format

1) LVDS 2 Port

LM270WF5

Liquid Crystal Display

Product Specification

< Clock skew margin between channel >

< LVDS Data Format >

Ver 0.1 Dec. 22. 2011

12 / 32

Product Specification

The LED interface connector is a model SM06B

SHJH(HF) manufactured by JST

5

FB2

Ch

k

LM270WF5

Liquid Crystal Display

3-2-2. LED Interface

­The mating connector is a SHJP-06V-S(HF) or Equivalent.
The pin configuration for the connector is shown in the table below.

Table 5. LED connector pin configuration

Pin Symbol Description Notes

1 FB1 Channel1 Current Feedback

2 NC No connection

3 VLED LED Power Supply

4 VLED LED Power Supply

annel2 Current Feedbac

6 FB3 Channel3 Current Feedback

FIG. 5 Backlight connector view

.

#1

#6

Ver 0.1 Dec. 22. 2011

Rear view of LCM

13 / 32

LM270WF5

od

tCLK

eod

tC

11.43

13.93

16.67

ns

H

F

fH

646683

KH

2

Vsync and Hsync should be keep the above specification

Liquid Crystal Display

Product Specification

3-3. Signal Timing Specifications

This is signal timing required at the input of the TMDS transmitter. All of the interface signal timing should be
satisfied with the following specifications for it’s proper operation.

Table 6. TIMING TABLE

ITEM Symbol Min Typ Max Unit Note

Peri

DCLK

Frequency -

60 72.0 87.5 MHz

sync

Vsync

Period tHP

Horizontal Valid tHV

Horizontal Blank tHB

requency

Width tWH

Horizontal Back Porch tHBP

Horizontal Front Porch tHFP

Period tVP

Vertical Valid tVV

Vertical Blank tVB

Frequency fV

Width tWV

Vertical Back Porch tVBP

Vertical Front Porch tVFP

1024 1088 1120

960 960 960

64 128 160

16 32 48

32 48 64

16 48 48

1090 1100 1160

1080 1080 1080

10 20 80

50 60 75 Hz

2416

5832

3832

tCLK

z

tCLK

tHP

tHP

Note: Hsync period and Hsync width-active should be even number times of t

times of t

CLK, display control signal can be asynchronous. In order to operate this LCM a Hsync,

Vsyn, and DE(data enable) signals should be used.

1. The performance of the electro-optical characteristics may be influenced by variance of the vertical
refresh rates.

.

3. Hsync Period, Hsync Width, and Horizontal Back Porch should be any times of of character

number(4).

4. The polarity of Hsync, Vsync is not restricted.

5. The Max frequency of 1920X1080 resolution is 82.5Mhz

Ver 0.1 Dec. 22. 2011

CLK. If the value is odd number

.

14 / 32

3-4. Signal Timing Waveforms

t

1. DCLK , DE, DATA waveforms

LM270WF5

Liquid Crystal Display

Product Specification

DCLK

tCLK

First data

Second data

DE(Data Enable)

2. Horizontal waveform

Invalid data

Invalid data

Valid data

Pixel 0,0

Valid data

Pixel 1,0

Pixel 2,0

Pixel 3,0

tHV

Invalid data

Invalid data

HP

DE(Data Enable)

3. Vertical waveform

tVV

tHP

DE(Data Enable)

Ver 0.1 Dec. 22. 2011

DE

t

VP

DE

15 / 32

LM270WF5

Color

a

RED (001)

00000001000000000000000

0

Liquid Crystal Display

Product Specification

3-5. Color Input Data Reference

The Brightness of each primary color(red,green,blue) is based on the 8-bit gray scale data input for the color;
the higher the binary input, the brighter the color. The table below provides a reference for color versus data
input.

Table 7. COLOR DATA REFERENCE

Input Color Data

RED GREEN BLUE

MSB LSB MSB LSB MSB LSB

R7 R6 R5 R4 R3 R2 R1 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 B5 B4 B3 B2 B1 B0

Black 000000000000000000000000

Red (255) 111111110000 000000000000

Green (255) 000000001111111100000000

Basic
Color

RED

GREEN

Blue (255) 000000000000 000011111111

Cyan 000000001111 111111111111

Magenta 111111110000000011111111

Yellow 111111111111111100000000

White 111111111111111111111111

RED (000) Dark 000000000000000000000000

... ... ... ...

RED (254) 111111100000000000000000

RED (255) 111111110000000000000000

GREEN (000) Dark 000000000000000000000000

GREEN (001) 000000000000000100000000

... ... ... ...

GREEN (254) 000000001111111000000000

GREEN (255) 000000001111111100000000

BLUE (000) Dark 000000000000000000000000

BLUE (001) 000000000000000000000001

BLUE

BLUE (254) 000000000000000011111110

BLUE (255) 000000000000000011111111

... ... ... ...

Ver 0.1 Dec. 22. 2011

16 / 32

3-5. Power sequence

LM270WF5

Liquid Crystal Display

Product Specification

90% 90%

Power supply for LCD

Vcc

0V

Interface signal

V

I

Power Supply for LED

Table 8. POWER SEQUENCE

Parameter Units

T1 0.5 - 10 ms

10%

T1

T2 T5 T7

Valid data

T3

T4

LED on

OFF

Values

Min Typ Max

10%

OFF

T2 0.01 - 50 ms

T3 500 - - ms

T4 200 - - ms

T5 0.01 - 50 ms

T7 1000 - ms

Notes :

1. Please V

power on only after connecting interface cable to LCD.

LCD

2. Please avoid floating state of interface signal at invalid period.

3. When the interface signal is invalid, be sure to pull down the power supply for
LCD V

LCD

to 0V.

4. LED power must be turn on after power supply for LCD an interface signal are valid.

Ver 0.1 Dec. 22. 2011

17 / 32

Product Specification

LM270WF5

Liquid Crystal Display

3-7. V

LCD

1) Dip condition

Power Dip Condition

t

d

FIG.6 Power dip condition

V

4.5V

3.5V

GND(ground)

LCD

2) V

3.5V ≤V

＜ 3.5V

LCD

V

-dip conditions should also follow the Power On/Off conditions for supply voltage.

LCD

＜ 4.5V , t

LCD

≤20ms

d

Ver 0.1 Dec. 22. 2011

18 / 32

4. Optical Specifications

Optical ch

‘ON’ f

pp

Gray To Gray

T

-1425ms4

%

7

LM270WF5

Liquid Crystal Display

Product Specification

aracteristics are determined after the unit has been

or approximately 30 minutes

in a dark environment at 25±2°C. The values specified are at an approximate distance 50cm from the LCD
surface at a viewing angle of Φ and θ equal to 0 ° and aperture 1 degree.

FIG. 1 presents additional information concerning the measurement equipment and method.

PR 880 or RD 80S

or PR650

Optical Stage(x,y)

LCD Module

50cm

FIG.7 Optical Characteristic Measurement Equipment and Method

4-1. 2D Optical specifications

BW

(Ta=25 °C, V

Min Typ Max

200 250 - cd/m

75 - - % 3

-8-ms

Typ

-0.03

- 140 -

- 100 -

170 178 ­170 178 -

--20

--20

-

Table 9. OPTICAL CHARACTERISTICS

Parameter Symbol

Contrast Ratio CR 600 1000 - 1
Surface Luminance, white L

Luminance Variation

Response Time

Color Coordinates
[CIE1931]

(By PR650)

Color Shift
(Avg. ∆u’v’ < 0.02)
Viewing Angle (CR>10)

General

GSR @ 60dgree
(Gamma shift rate)
WPT (White Point Tracking) - -300 G255 CCT +700 K 8

Color gamut (CG, CIE1931)
Gray Scale - - 2.2 - 9

Gray-to-Gray

(BW)

RED Rx

GREEN Gx TBD

BLUE Bx TBD

WHITE Wx 0.313

Horizontal
Vertical

Horizontal

Vertical
Horizontal
Vertical

WH

δ

WHITE

GTG_AVR

G to G

Ry TBD

Gy TBD

By TBD

Wy 0.329

θ

CST_H

θ

CST_V

θ

H

θ

V

δ

Gamma_H

δ

Gamma_V

=5V, fV=60Hz Dclk=144MHz, IBL=120 mA)

LCD

Values

TBD

Typ

+0.03

72 - %

Units Notes

2

Reference

Degree 5

Degree 6

10

2

Ver 0.1 Dec. 22. 2011

19 / 32

Product Specification

(By

)

() y

(y )

3. The variation in surface luminance

δ

WHITE is

defined as :

(By PR880)

y

ygy p q py gygy

3122

+

+

y

x

3122

+

+

y

x

Degree)

60

Light

Reft,Down

(Up,Value

Gamma

angle

View

⎞⎜⎜⎝⎛

LM270WF5

Liquid Crystal Display

Notes 1. Contrast Ratio(CR) is defined mathematically as :

RatioContrast =

It is measured at center point(Location P1)

2. Surface luminance(L
from the surface with all pixels displaying white. For more information see FIG.8 (By PR880)

Where L1 to L9 are the luminance with all pixels displaying white at 9 locations.

For more information see FIG.8

4. Gra

5. Color shift is the angle at which the average color difference for all Macbeth is lower than 0.02.

to gray response time is the time required for the display to transition from gray to gray.

For additional information see Table 10.

For more information see FIG.9

- Color difference (∆u’v’)

WH)is luminance value at Center 1 point(P1) across the LCD surface 50cm

,

WHITE

=

δ

(By RD80S)

(By EZ Contrast)

…

PR880

)L .. ,L,Minimum(L

P9P2P1

×

)L .... ,L ,(L Maximum

P9P2P1

pixels whiteall with Luminance Surface
pixelsblack all with Luminance Surface

100

4

=

'

u

−

x

'

v

=

24

∆

∑

=

i

1

=∆

vuAvg

)''(

ivu

)''(

24

- Pattern size : 25% Box size

- Viewing angle direction of color shift : Horizontal, Vertical

6. Viewingangle is the angle at which the contrast ratio isgreater than 10.The angles are

determined for the horizontal or x axis and the vertical or y axis with respect to the z axis which
is normal to the LCD surface. For more information see FIG.10

7. GSR is the rate of gamma shift at up, down, left and right 60 degree viewing angle compare with
center gamma. For more information see FIG.11 and FIG.12

-GSR (δ

.

8. WPT (White Point Tracking) is the variation of color temperature between G255 and G63.

) is defined as :

Gamma

1 ×

−=GSR

9

y

u’1, v’1 : u’v’ value at viewing angle direction
u’2, v’2 : u’v’ value at front (θ=0)

i : Macbeth chart number (Define 23 page)

2

21

(By PR880)

(By EZ Contrast)

,

Degree) (0 Value GammaCenter

100

⎟
⎠

2

)''()''('' vvuuvu −+−=∆

21

(By PR650)

Ver 0.1 Dec. 22. 2011

20 / 32

Product Specification

Notes 10. Response time is the time required for the display to transit from any gray to white (Rise Time, Tr

R

)

H/2

H/10

Table. 10 GTG Gray Table

Notes 9. Gamma Value is approximately 2.2. For more information see Table 11.

and from any gray to black (Decay time, Tr

BW Spec stands for average value of all measured points.

G to G

Measuring point for surface luminance & measuring point for luminance variation.

D).

(By RD80S)

H

LM270WF5

Liquid Crystal Display

●

●

P2

P5

V/2

V

●

V/10

P7

P3

●

P1

●

P8

●●

●

●

P4

P6

P9

FIG.8 Measure Point for Luminance

The Gray to Gray response time is defined as the following figure and shall be measured by switching the input
signal for “Gray To Gray “.

- Gray step : 5 Step

- TGTG_AVR is the total average time at rising time and falling time for “Gray To Gray “.

- if system use ODC ( Over Driving Circuit) function, Gray to Gary response time may be 5ms~8ms GtG
* it depends on Overshoot rate.

Gray to Gray

G255 G191 G127 G63 G0

Rising Time

Falling Time G255

G191

G127

G63

G0

Ver 0.1 Dec. 22. 2011

21 / 32

LM270WF5

R

2195621176160

230

Liquid Crystal Display

Product Specification

G to G(BW) Response time is defined as the following figure and shall be measured by switching the input
signal for “Gray(N)” and “Black or White”.

Tr

100

90

Optical
Response

10

0

Gray(N)

White

N = 0(Black)~255(White)

Color shift is defined as the following test pattern and color.

Gray(N)

Tf

Black

25% Box size

FIG.9 Color Shift Test Pattern

Average RGB values in Bruce RGB for Macbeth Chart

Dark skin (i=1) Light skin Blue sky Foliage Blue flower Bluish green

R 98 206 85 77 129 114

G 56 142 112 102 118 199

B 45 123 161 46 185 178

Orange Purplish blue Moderate red Purple Yellow green Orange yellow

G 104 69 67 39 193 162

B 24 174 87 86 58 29

Blue Green Red Yellow Magenta Cyan

R 26 72 197 241 207 35

G 32 148 27 212 62 126

B 145 65 37 36 151 172

White Neutral 8 Neutral 6.5 Neutral 5 Neutral 3.5 Black

R 240 206 155 110 63 22

G 240 206 155 110 63 22

B 240 206 155 110 63 22

Ver 0.1 Dec. 22. 2011

22 / 32

Dimension of viewing angle range.

φ

=

−

FIG.11 Sample Luminance vs. gray scale

FIG.12 Sample Log

log plot of luminance

LM270WF5

Liquid Crystal Display

Product Specification

φ

= 180°, Left

φ

= 270°, Down

Normal

E

θ

FIG.10 Viewing angle

Y

φ

= 90°, Up

φ

= 0°, Right

(using a 256 bit gray scale)

r

LaVL +=

Here the Parameter α and γ relate the signal level V to the luminance L.

The GAMMA we calculate from the log-log representation (FIG.11)

Ver 0.1 Dec. 22. 2011

-

vs. gray scale

b

b

+

)log()log()log( aVrLL

23 / 32

Product Specification

Table 11

Gray Scale Specification

95

11.49

255

100

.

Gray Level Relative Luminance [%] (Typ.)

LM270WF5

Liquid Crystal Display

0

31 1.08

63 4.72

127 21.66

159 35.45

191 53.00

223 74.48

0.11

Ver 0.1 Dec. 22. 2011

24 / 32

5. Mechanical Characteristics

Th

dditi

fig

LM270WF5

Liquid Crystal Display

Product Specification

e contents provide general mechanical characteristics. In a

on the

ures in the next page are detailed

mechanical drawing of the LCD.

Horizontal 630mm

Outline Dimension

Bezel Area

Active Display Area

Weight Typ : 3,300g, Max : 3,465g

Surface Treatment

Vertical 368.2mm

Depth 11.7mm

Horizontal 602mm

Vertical 340.4mm

Horizontal 597.888mm

Vertical 336.312mm

Low Haze
CLR treatment of the front polarizer

Notes : Please refer to a mechanic drawing in terms of tolerance at the next page.

Ver 0.1 Dec. 22. 2011

25 / 32

<FRONT VIEW>

LM270WF5

Liquid Crystal Display

Product Specification

Ver 0.1 Dec. 22. 2011

26 / 32

<REAR VIEW>

LM270WF5

Liquid Crystal Display

Product Specification

Ver 0.1 Dec. 22. 2011

27 / 32

6. Reliability

Envi

diti

3

High t

t

T

50

°

C

50%RH

240h

8

g

0

000 f

)

LM270WF5

Liquid Crystal Display

Product Specification

ronment test con

No Test Item Condition

1 High temperature storage test

2 Low temperature storage test

emperature operation tes

4 Low temperature operation test

5

6

7 Humidity condition Operation

Vibration test
(non-operating)

Shock test
(non-operating)

on

Ta= 60°C 240h

Ta= -20°C 240h

a=

Ta= 0°C 240h

Wave form : random
Vibration level : 1.00G RMS
Bandwidth : 10-300Hz
Duration : X, Y, Z, 10 min

Shock level : 100G
Waveform : half sine wave, 2ms

Direction : ±X, ±Y, ±Z

Ta=

One time each direction

One time each direction

40 °C ,90%RH

Altitude

operatin
storage / shipment

9

Maximum Storage Humidity for
4 corner light leakage Mura.

-10,

0 - 50,000 feet(15,240m)

Max 70%RH , Ta=40℃

eet(3,048m

Ver 0.1 Dec. 22. 2011

28 / 32

Product Specification

7-1. Safet

gy Equip

gy q p

y

q

(

(),

7. International Standards

y

a) UL 60950-1, Underwriters Laboratories Inc.

Information Technology Equipment - Safety - Part 1 : General Requirements.

b) CAN/CSA C22.2 No.60950-1-07, Canadia n Standards Association.

Information Technology Equipment - Safety - Part 1 : General Requirements.

c) EN 60950-1, European Committee for Electrotechnical Standardization (CENELEC).

Information Technolo

d) IEC 60950-1, The International Electrotechnical Commission (IEC).

Information Technology Equipment - Safety - Part 1 : General Requirements.

(Including report of IEC60825-1:2001 clause 8 and clause 9)

Notes

1. Laser (LED Backlight) Information
Class 1M LED Product

Embedded LED Power (Class1M)

ment - Safety - Part 1 : General Requirements.

IEC60825-1 : 2001

LM270WF5

Liquid Crystal Display

2. Caution
: LED inside.

Class 1M laser (LEDs) radiation when open.
Do not open while operating.

7-2. EMC

a) ANSI C63.4 “American National Standard for Methods of Measurement of Radio-Noise

Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz.”
American National Standards Institute (ANSI), 2003.

b) CISPR 22 “Information technology equipment – Radio disturbance characteristics – Limit and

methods of measurement." International Special Committee on Radio Interference

CISPR), 2005.

c) CISPR 13 “Sound and television broadcast receivers and associated equipment – Radio disturbance

characteristics – Limits and method of measurement." International Special Committee on Radio
Interference (CISPR), 2006.

7-3. Environment

a) RoHS, Directive 2002/95/EC of the European Parliament and of the council of 27 January 2003

Ver 0.1 Dec. 22. 2011

29 / 32

Product Specification

8-1. Desi

k

E : MONTH

SERIAL NO.

b) Box Size : 700(L) X 355(W) X 430(H

)

8. Packing

gnation of Lot Mar

a) Lot Mark

ABCDEFGHI JKLM

A,B,C : SIZE(INCH) D : YEAR

F M :

Note

1. YEAR

LM270WF5

Liquid Crystal Display

~

Year

Mark

CBA

2014E2015

D

201320122011

2016G2017H2018J2019

F

2. MONTH

Month

Mark

Apr5May

4

Jun

6

Jul8Aug9Sep

7

b) Location of Lot Mark

Serial No. is printed on the label. The label is attached to the backside of the LCD module.
This is subject to change without prior notice.

8-2. Packing Form

a) Package quantity in one box : 10-LCMs

2020

K

Oct

A

Nov

B

DecMarFebJan

C321

Ver 0.1 Dec. 22. 2011

30 / 32

LM270WF5

(3) Please attach the surface transparent protective plate to the surface in order to protect the polarizer.

to th

)

(10)

() p ,p y pp p

And in lower temperature, response time(required time that brightness is stable after turned on) becomes

i

Liquid Crystal Display

Product Specification

9. PRECAUTIONS

Please pay attention to the followings when you use this TFT LCD module.

9-1. MOUNTING PRECAUTIONS

(1) You must mount a module using holes arranged in four corners or four sides.
(2) You should consider the mounting structure so that uneven force (ex. Twisted stress) is not applied to the

module. And the case on which a module is mounted should have sufficient strength so that external
force is not transmitted directly to the module.

Transparent protective plate should have sufficient strength in order to the resist external force.
(4) You should adopt radiation structure to satisfy the temperature specification.
(5) Acetic acid type and chlorine type materials for the cover case are not desirable because the former

generates corrosive gas of attacking the polarizer at high temperature and the latter causes circuit break
by electro-chemical reaction.

(6) Do not touch, push or rub the exposed polarizers with glass, tweezers or anything harder than HB

pencil lead. And please do not rub with dust clothes with chemical treatment.

Do not touch the surface of polarizer for bare hand or greasy cloth.(Some cosmetics are detrimental

e polarizer.

(7) When the surface becomes dusty, please wipe gently with absorbent cotton or other soft materials like

chamois soaks with petroleum benzene. Normal-hexane is recommended for cleaning the adhesives
used to attach front / rear polarizers. Do not use acetone, toluene and alcohol because they cause
chemical damage to the polarizer.

(8) Wipe off saliva or water drops as soon as possible. Their long time contact with polarizer causes

deformations and color fading.

(9) Do not open the case because inside circuits do not have sufficient strength.

As The IPS panel is sensitive & slim, please recommend the metal frame of the system supports the panel
by the double side-mount.

9-2. OPERATING PRECAUTIONS

(1) The spike noise causes the mis-operation of circuits. It should be lower than following voltage :

V=±200mV(Over and under shoot voltage)

(2) Response time depends on the temperature.(In lower temperature, it becomes longer.)
(3) Brightness depends on the temperature. (In lower temperature, it becomes lower.)

longer.

(4) Be careful for condensation at sudden temperature change. Condensation makes damage to polarizer or

electrical contacted parts. And after fading condensation, smear or spot will occur.
(5) When fixed patterns are displayed for a long time, remnant image is likely to occur.
(6) Module has high frequency circuits. Sufficient suppression to the electromagnetic interference shall be

done by system manufacturers. Grounding and shielding methods may be important to minimized the

interference.
(7) Please do not give any mechanical and/or acoustical impact to LCM. Otherwise, LCM can’t be operated

ts full characteristics perfectly.

(8) A screw which is fastened up the steels should be a machine screw.

(if not, it causes metallic foreign material and deal LCM a fatal blow)
(9) Please do not set LCD on its edge.
(10) When LCMs are used for public display defects such as Yogore, image sticking can not be guarantee.

Ver 0.1 Dec. 22. 2011

31 / 32

LM270WF5

(3) You can remove the glue easily. When the glue remains on the bezel surface or its vestige is recognized

Liquid Crystal Display

Product Specification

9-3. ELECTROSTATIC DISCHARGE CONTROL

Since a module is composed of electronic circuits, it is not strong to electrostatic discharge. Make certain that
treatment persons are connected to ground through wrist band etc. And don’t touch interface pin directly.

9-4. PRECAUTIONS FOR STRONG LIGHT EXPOSURE

Strong light exposure causes degradation of polarizer and color filter.

9-5. STORAGE

When storing modules as spares for a long time, the following precautions are necessary.

(1) Store them in a dark place. Do not expose the module to sunlight or fluorescent light. Keep the temperature

between 5°C and 35°C at normal humidity.

(2) The polarizer surface should not come in contact with any other object.

It is recommended that they be stored in the container in which they were shipped.

9-6. HANDLING PRECAUTIONS FOR PROTECTION FILM

(1) The protection film is attached to the bezel with a small masking tape.

When the protection film is peeled off, static electricity is generated between the film and polarizer.
This should be peeled off slowly and carefully by people who are electrically grounded and with well ion­blown equipment or in such a condition, etc.

(2) When the module with protection film attached is stored for a long time, sometimes there remains a very

small amount of glue still on the bezel after the protection film is peeled off.

,
please wipe them off with absorbent cotton waste or other soft material like chamois soaked with normal­hexane.

Ver 0.1 Dec. 22. 2011

32 / 32