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LM270WF1
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ) Final Specification
Title 27" Full HD TFT LCD
BUYER LG Electronics SUPPLIER LG. Display Co., Ltd.
MODEL *MODEL LM270WF1
SUFFIX TLB1
*When you obtain standard approval,
please use the above model name without suffix
SIGNATURE SIGNATURE
APPROVED BY APPROVED BY
DATE DATE
/ H.S. Kim / G.Manager
REVIEWED BY
/ D.I. Chung / Manager
PREPARED BY
/ K.H. Lee / Engineer
Please return 1 copy for your confirmation with MNT Products Engineering Dept.
your signature and comments. LG. Display LCD Co., Ltd
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LM270WF1
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
3-1 ELECTRICAL CHARACTREISTICS 6
3-2 INTERFACE CONNECTIONS 8
3-3 SIGNAL TIMING SPECIFICATIONS 12
3-4 SIGNAL TIMING WAVEFORMS 13
3-5 COLOR INPUT DATA REFERNECE 14
3-6 POWER SEQUENCE 15
4 OPTICAL SFECIFICATIONS 17
5 MECHANICAL CHARACTERISTICS 23
6 RELIABLITY 26
7 INTERNATIONAL STANDARDS 27
7-1 SAFETY 27
7-2 EMC 27
8 PACKING 28
8-1 DESIGNATION OF LOT MARK 28
8-2 PACKING FORM 28
9 PRECAUTIONS 29
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LM270WF1
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision
Revision Date Page Description
No
0.0 Oct. 1. 2008 - First Draft(Preliminary)
0.1 Oct. 15. 2008 4,6 Power consumption is updated.
Notes 6 is added
10
"On status of MPRT is support dynamic image."
16 Signal Timing specification is changed.
Skew specification is updated.
0.2 Nov.1.2008 12
Skew : 350ps @85~90Mhz
1.0 Dec. 11. 2008 Final Specifications
Addedthe noted 5
16
5. BDI on status : Vsync opearte at 60hz
1.1 Jan.16..2009 19 T7 Timing Specification is changed from 500ms to 300ms.
1.2 Feb. 4. 2009 20 Add the Viewing angle specification at CR>5
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LM270WF1
Liquid Crystal Display
Product Specification
1. General Description
LM270WF1 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system without inverter. 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 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 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 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 is intended to support
applications where thin thickness, wide viewing angle, low power are critical factors and 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.
Source Driver Circuit
RGB, Dclk, DE Timing Control
Hsync, Vsync S1 S1920
CN1 Block
(LVDS 2 port) (30pin) Gate Driver circuit
G1
VLCD(12.0V)
TFT-LCD Panel
Power Circuit Block (1920 u 1080 pixels)
G1080
V LAMP CN 2 Back light Assembly
2pin x 8CNs (High)
(Direct Light Type_ U shape 7 CCFL)
Figure 1. Block diagram
General Features
Active Screen Size 27 inches(68.6cm) diagonal
Outline Dimension 630(H) x 368.2(V) x 37.2(D) mm(Typ.) *Without Inverter
Pixel Pitch 0.3114 mm x 0.3114 mm
Pixel Format 1920 horiz. By 1080 vert. Pixels RGB stripes arrangement
Color Depth 8-bit with A-FRC, 16,777,216 colors
Luminance, White 400 cd/m2 (Center 1 point)
Viewing Angle(CR>10) View Angle Free (R/L 170(Typ.), U/D 160(Typ.))
Power Consumption Total 87.8 Watt (Typ.) ( 4.2 Watt @VLCD, 83.6 Watt @400cd/ ])
Weight 4220 g (typ.)
Display Operating Mode Transmissive mode, normally White
Surface Treatment Hard coating(3H) & Anti-Glare treatment of the front polarizer
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LM270WF1
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
Values
Parameter Symbol Units Notes
Min Max
Power Input Voltage VLCD -0.3 12.4 Vdc at 25 r 2 C
Operating Temperature TOP 0 50 C
Storage Temperature TST -20 60 C
1
Operating Ambient Humidity HOP 10 90 %RH
Storage Humidity HST 10 90 %RH
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.
Figure 2. Temperature and relative humidity
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LM270WF1
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 CCFL, is typically generated by an inverter. The inverter is an
external unit to the LCDs.
Table 2-1. ELECTRICAL CHARACTERISTICS
Values
Parameter Symbol Unit Notes
Min Typ Max
MODULE :
Power Supply Input Voltage VLCD 11.6 12.0 12.4 Vdc
Permissive Power Input Ripple VdRF 400 mVp-p 1
Differential Impedance Zm 90 100 110 Ohm
- mA 2
Power Supply Input Current ILCD
Normal - mA 3
status Pc TYP - Watt 2
Power Consumption
Pc MAX - Watt 3
- mA 2
Power Supply Input Current ILCD
BDI - mA 3
Status Pc TYP - 6.0 6.9 Watt 2
Power Consumption
Pc MAX - 6.12 7.08 Watt 3
Rush current IRUSH - - 3.0 A 4
Note :
1. Permissive power ripple should be measured under VCC=12.0V, 25 C, fV(frame frequency)=MAX
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 VLCD=12.0V, 25 r 2 C,fV=60Hz condition
whereas Mosaic and max power pattern shown in the [ Figure 3 ] is displayed.
3. The current is specified at the maximum current pattern.
4. Maximum Condition of Inrush current :
The duration of rush current is about 2ms and rising time of Input Voltage is 1ms(min.).
At any rising time of Input voltage, Keep the I2T Value by below Condition
Condition : I2T < 32*2ms
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LM270WF1
Liquid Crystal Display
Product Specification