LG LM-156WH1-TLE1 Service manual
( ) Preliminary Specification
(◆ ) Final Specification
Title 15.6” HD TFT LCD
LM156WH1
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
BUYER
MODEL
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SIGNATURE DATE
/
/
/
HP
SUPPLIER LG Display Co., Ltd.
*MODEL LM156WH1
SUFFIX TLE1
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
G.T.KIM / G.Manager
REVIEWED BY
Y.W.LEE / Manager [C]
J.H.LEE / Manager [M]
D.Y.SEOK / Manager [P]
PREPARED BY
DATE
Please return 1 copy for your confirmation with
your signature and comments.
Ver1.0 Jan. 21, 2009
D.G.KIM / Engineer
Product Engineering Dept.
LG Display Co., Ltd.
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LM156WH1
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 CHARACTERISTICS 6
3-2 INTERFACE CONNECTIONS 9
3-3 SIGNAL TIMING SPECIFICATIONS 14
3-4 SIGNAL TIMING WAVEFORMS 15
3-5 COLOR INPUT DATA REFERANCE 16
3-6 POWER SEQUENCE 17
4 OPTICAL SPECIFICATIONS 18
5 MECHANICAL CHARACTERISTICS 22
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6 RELIABILITY 25
7 INTERNATIONAL STANDARDS 26
7-1 SAFETY 26
7-2 EMC 26
8 PACKING 27
8-1 DESIGNATION OF LOT MARK 27
8-2 PACKING FORM 27
9 PRECAUTIONS 28
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Product Specification
RECORD OF REVISIONS
First Draft (Preliminary Specification)-Oct. 17. 20080.1
Update for color coordinates18Dec.19.20080.2
Update for Rear view24
Update for Dclk(Min, Max)14Jan.05.20090.3
Final specificationJan.21.20091.0
LM156WH1
Liquid Crystal Display
DescriptionPageRevision DateRevision No
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LM156WH1
Liquid Crystal Display
Product Specification
1. General Description
The LM156WH1-TLE1 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 white mode. This TFT-LCD has 15.6
inches diagonally measured active display area with HD resolution(768 vertical by 1366 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 6-bit gray scale signal for
each dot, thus, presenting a palette of more than 262,144 colors.
The LM156WH1-TLE1 has been designed to apply the interface method that enables low power, high
speed, low EMI.
The LM156WH1-TLE1 is intended to support applications where thin thickness, low power are critical
factors and graphic displays are important. In combination with the vertical arrangement of the sub-pixels,
the LM156WH1-TLE1 characteristics provide an excellent flat display for office automation products such as
Monitors.
RGB
Source driver circuit
LVDS
CN1
(30pin)
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+3.3V
VLCD
General Features
Timing controller
＆LVDS 1 chip
Power circuit
block
15.6 inches diagonal Active Screen Size
363.8(H, typ) × 215.9(V, typ) × 12.0(D,typ) [mm]Outline Dimension
0.252mm × 0.252 mmPixel Pitch
1366 horiz. By 768 vert. Pixels RGB strip arrangementPixel Format
6-bit, 262,144 colorsColor Depth
200 cd/m2(Typ.Center 1 point)Luminance, White
Total 12.35 Watt(Typ.) @ LCM circuit 1.55 Watt(Typ.), B/L input 10.80 Watt(Typ.)Power Consumption
950g (Typ.)Weight
Transmissive mode, normally whiteDisplay Operating Mode
Hard Coating(3H), Anti-Glare treatment of the front polarizerSurface Treatment
YesRoHS Comply
S1
G1
TFT -LCD Panel
(1366 × RGB × 768 pixels)
G768
CN2 (2pin)
CN3 (2pin)
Figure 1. Block diagram
S1366
Backlight assembly (2CCFL)
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LM156WH1
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 Notes
Power Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity
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.
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Wet Bulb
Temperature [℃]
20
10
0
Symbol
60
50
40
30
Values
MaxMin
90%
60%
40%
Humidity [(%)RH]
10%
Units
Operation
at 25 ± 5°CVdc4.0-0.3VCC
1°C500TOP
1°C60-20HST
1%RH9010HOP
1%RH9010HST
Storage
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [℃]
Figure 2. Temperature and relative humidity
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Liquid Crystal Display
Product Specification
3. Electrical specifications
3-1. Electrical characteristics
The LM156WH1-TLE1 requires two power inputs. One is employed to power the LCD electronics and to
drive the TFT array and liquid crystal. Another which powers theCCFL, is typically generated by an inverter.
The inverter is an external unit to the LCD.
Table 2_1. ELECTRICAL CHARACTERISTICS
Values
Parameter Symbol
MaxTypMin
MODULE :
Vdc3.63.33.0VLCDPower Supply Input Voltage
NotesUnit
Power Supply Input Current
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 500us ± 20%.(min.).
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White : 63Gray
Black : 0Gray
ILCD_BLACK
=3.3V, 25 ± 2°C,fV=60Hz condition
LCD
Maximum current pattern
1mA540470-ILCD_MOSAIC
2mA670580-
1Watt1.781.55-PLCDPower Consumption
3A2--IRUSHRush current
Mosaic Pattern(8 x 6)
Figure 3. Current Pattern
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Black Pattern
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Product Specification
Table 2_2. ELECTRICAL CHARACTERISTICS
LM156WH1
Liquid Crystal Display
Parameter Symbol
LAMP :
VBLOperating Voltage
at 25 °C
at 0 °C
Operating Frequency
Discharge Stabilization Time
Power Consumption
Life Time
Note : The design of the inverter must have specifications for the lamp in LCD Assembly.
The performance of the Lamp in LCM, for example life time or brightness, is extremely influenced by
the characteristics of the DC-AC inverter. So all the parameters of an inverter should be carefully
designed so as not to produce too much leakage current fromhigh-voltage output of the inverter.
When you design or order the inverter, please make sure unwanted lighting caused by the mismatch
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of the lamp and the inverter (no lighting, flicker, etc) never occurs. When you confirm it, the LCD–
Assembly should be operated in the same condition as installed in you instrument.
※ Do not attach a conducting tape to lamp connecting wire.
If the lamp wire attach to a conducting tape, TFT-LCD Module has a low luminance and the inverter
has abnormal action. Because leakage current is occurred between lamp wire and conducting tape.
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590
(9.5mA)
Values
600
(9.0mA)
MaxTypMin
780
(2.5mA)
9.59.02.5IBLOperating Current
1100
1300
RMS
RMS
V
RMS
V
RMS
NotesUnit
1, 2V
1mA
1, 3VsEstablished Starting Voltage
4kHz706040fBL
1, 5Min3Ts
6W11.8810.8PBL
1, 7Hrs35,000
1. Specified values are for a single lamp.
2. Operating voltage is measured at 25 ± 2°C. The variance of the voltage is ± 10%.
3. The voltage above VSshould be applied to the lamps for more than 1 second for start-up.
(Inverter open voltage must be more than lamp startingvoltage.)
Otherwise, the lamps may not be turned on. The used lamp current is the lamp typical current.
4. Lamp frequency may produce interface with horizontal synchronous frequency and as a result this may
cause beat on the display. Therefore lamp frequency shall be as away possible from the horizontal
synchronous frequency and from its harmonics in order to prevent interference.
5. Let’s define the brightness of the lamp after being lighted for 5 minutes as 100%.
TSis the time required for the brightness of the center of the lamp to be not less than 95%.
6. The lamp power consumption shown above does not include loss of external inverter.
The used lamp current is the lamp typical current. (PBL= VBLx IBLx N
7. The life is determined as the time at which brightness of thelamp is 50% compared to that of initial
value at the typical lamp current on condition of continuousoperating at 25 ± 2°C.
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Lamp
)
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LM156WH1
Liquid Crystal Display
Product Specification
8. The output of the inverter must have symmetrical(negative andpositive) voltage waveform and
symmetrical current waveform (Unsymmetrical ratio is less than 10%). Please do not use the inverter
which has unsymmetrical voltage and unsymmetrical current and spike wave.
Requirements for a system inverter design, which is intended to have a better display performance, a
better power efficiency and a more reliable lamp, are following.
It shall help increase the lamp lifetime and reduce leakage current.
a. The asymmetry rate of the inverter waveform should be less than 10%.
b. The distortion rate of the waveform should be within √2 ±10%.
* Inverter output waveform had better be more similar to ideal sine wave.
* Asymmetry rate:
I p
| I p– I –p| / I
rms
x 100%
I -p
9. The inverter which is combined with this LCM, is highly recommended to connect coupling(ballast)
condenser at the high voltage output side. When you usethe inverter which has not coupling(ballast)
condenser, it may cause abnormal lamp lighting because of biased mercury as time goes.
10.In case of edgy type back light with over 4 parallel lamps, input current and voltage wave form should
be synchronized
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* Distortion rate
I p(or I –p) / I
rms
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Liquid Crystal Display
Product Specification
3-2. Interface Connections
a) LCD connector(CN1) : AL230F-ALG1D-P (Manufactured by P-TWO), and IS100-L30R-C23(UJU)
b) Mating connector : FI-X30H and FI-X30HL (Manufactured by JAE) or Equivalent
c) Interface chips(System) : THC63LVDF823A or equivalent
* Pin to Pin compatible with LVDS
Table 3. Module connector pin configuration
DescriptionSymbolPin
GroundGND1
Power Supply, 3.3V Typ.VCC2
Power Supply, 3.3V Typ.VCC3
No connectionNC4
No connection(For LCD internal use only)NC5
No connection(For LCD internal use only)NC6
No connection(For LCD internal use only)NC7
Negative LVDS differential data inputOdd_RIN0-8
Positive LVDS differential data inputOdd_RIN0+9
GroundGND10
Negative LVDS differential data inputOdd_RIN1-11
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NC No Connection21
Positive LVDS differential data inputOdd_RIN1+12
GroundGND13
Negative LVDS differential data inputOdd_RIN2-14
Positive LVDS differential data inputOdd_RIN2+15
GroundGND16
Negative LVDS differential clock inputOdd_CLKIN-17
Positive LVDS differential clock inputOdd_CLKIN+18
GroundGND19
No ConnectionNC20
No ConnectionNC22
No ConnectionNC23
No ConnectionNC24
No ConnectionNC25
No ConnectionNC26
No ConnectionNC27
No ConnectionNC28
No ConnectionNC29
No ConnectionNC30
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