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PDF LM270WF1-TLD1 Data sheet ( Hoja de datos )
| Número de pieza | LM270WF1-TLD1 | |
| Descripción | Full HD TFT LCD | |
| Fabricantes | LG | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM270WF1-TLD1 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Product Specification
LM270WF1
Liquid Crystal Display
RECORD OF REVISIONS
Revision
No
0.0
0.1
0.2
0.3
0.4
0.5
1.0
Revision Date
Oct. 1. 2008
Jan.15.2009
Feb. 4. 2009
Feb.23. 2009
May.11.2009
Jun.29.2009
Aug. 6.2009
Page
4,25
4
8
26,27
30
20
20
9
4
4
15
19
27
20
Description
First Draft(Preliminary)
Weight is updated.
BL Power Consumption is updated.
Lamp electrical characteristics are updated.
TBD of Mechanical drawing is updated
Packing information is updated.
Add the Viewing angle specification at CR>5
Color coordinates is updated.
Added a condition of lamp input voltage phase
Changed Max lamp operating current ( 7.5mA ˧ 8mA )
Added a condition of lamp operating current
Final Specification
Changed wire color of lamp3
Changed T7 min spec ( 500ms ˧ 300ms )
Update lower lamp wire length to drawing ( 220mm ˧ 180mm )
Color Gamut value is added.
Ver 1.0
Aug, 6, 2009
3 / 32
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LM270WF1
Liquid Crystal Display
Product Specification
8. The output of the inverter must have symmetrical(negative and positive) 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:
Ip
| I p – I –p | / Irms x 100%
* Distortion rate
I -p
I p (or I –p) / Irms
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 use the 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
11. The lamp input voltage of CN2 and CN3 must have the same phase.
12. The lamp input voltage of CN4 and CN5 must have the same phase.
Up Side
Lamp1
Lamp2
Down Side
Lamp3
Lamp4
Input Voltage Phase
CN2
CN3
CN4
CN5
Ver 1.0
Aug, 6, 2009
9 / 32
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11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LM270WF1-TLD1.PDF ] | |
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