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LM270WF1
Liquid Crystal Display
Product Specification
Ver 1.0 Aug, 6, 2009
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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 Jan.15.2009 4,25 Weight is updated.
4 BL Power Consumption is updated.
8 Lamp electrical characteristics are updated.
26,27 TBD of Mechanical drawing is updated
30 Packing information is updated.
0.2 Feb. 4. 2009 20 Add the Viewing angle specification at CR>5
0.3 Feb.23. 2009 20 Color coordinates is updated.
0.4 May.11.2009 9 Added a condition of lamp input voltage phase
0.5 Jun.29.2009 4 Changed Max lamp operating current ( 7.5mA 8mA )
4 Added a condition of lamp operating current
1.0 Aug. 6.2009 Final Specification
15 Changed wire color of lamp3
19 Changed T7 min spec ( 500ms 300ms )
27 Update lower lamp wire length to drawing ( 220mm 180mm )
20 Color Gamut value is added.
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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. 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 CN2, 3(2PIN)
V Back light Assembly(4 CCFL)
LAMP CN4, 5(2PIN)
Figure 1. Block diagram
General Features
Active Screen Size 27 inches(68.6cm) diagonal
Outline Dimension 630(H) x 368.2(V) x 21.6(D) mm(Typ.)
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 300 cd/m2 (Center 1 point)
Viewing Angle(CR>10) View Angle Free (R/L 170(Typ.), U/D 160(Typ.))
Power Consumption Total 31.6 Watt (Typ.) ( 4.2 Watt @ VLCD,27.4Watt @300cd/ )
Weight 3720 g (Typ.)
Display Operating Mode Transmissive mode, normally White
Surface Treatment Hard coating(3H) & Anti-Glare treatment of the front polarizer
Ver 1.0 Aug, 6, 2009 4 / 32
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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
Ver 1.0 Aug, 6, 2009 6 / 32
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LM270WF1
Liquid Crystal Display
Product Specification