LQ170E1LG11 Sharp Microelectronics, LQ170E1LG11 Datasheet - Page 11

• Manufacturer Part Number: LQ170E1LG11
• Description: LCD TFT 17" 1280X1024 SXGA
• Manufacturer: Sharp Microelectronics

Specifications of LQ170E1LG11

• Display Type: LCD - Color
• Display Mode: *
• Viewing Area: 337.90mm L x 270.30mm W
• Dot Pixels: 1280 x 1024 (SXGA)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -
• Backlight: -
• Dot Size: -
• Dot Pitch: -
• Other names: 425-2477

【 Note4 】 It is defined at 27pF for the ballast capacitor of a DC-AC inverter.
6-2. Backlight
【 Note1 】 A lamp can be light in the range of lamp current shown above.
【 Note2 】 Referential data per one CCFT by calculation ( I
【 Note3 】 Lamp frequency of inverter may produce interference with horizontal synchronous frequency, and
【 Note5 】 Above value is applicable when the long side of LCD module is placed horizontally.
【 Note6 】 Crest Factor of inverter output waveform is defined as
Lamp current range
Lamp voltage
Lamp power consumption
Lamp frequency
Kick-off voltage
Lamp life time
The back light system is an edge-lighting type with 4CCFTs (Cold Cathode Fluorescent Tube).
The characteristics of the lamp are shown in the following table.
The value mentioned below is at the case of one CCFT.
CCFT Model Name : MBT24JB413AX347.3MWRAU/C （
Parameter
The kick-off voltage may rise up in the user set, please decide the open output voltage by checking not
to occur lighting failure under operating state.
(Lamp lifetime may vary if LCD module is in portrait position due to the change of mercury density
this may cause horizontal beat on the display. Therefore, adjust lamp frequency, and keep inverter as far
as from module or use electronic shielding between inverter and module to avoid interference.
The open output voltage should be applied to the lamp for more than 1 second to startup.
Otherwise the lamp may not be turned on.
the condition of Ta=25 ℃ and I
inside the lamp.)
Lamp life time is defined as the time when either ① or ② occurs in the continuous operation under
Ambient temperature : 0 ∼ 50 ℃
The data don’t include loss at inverter.
Maximum rating for current is measured by high frequency current measurement equipment
connected to V
Lamp frequency : 40 ∼ 70kHz
(Landscape position)
0.9 × √ 2 × Irms < I
However, please apply a plus/minus symmetrical sine-wave within 10% of un-symmetrical ratio
without spike-wave to both space and peak of IL/VL waveform.
(Note : To keep enough kick-off voltage and necessary steady voltage for CCFT.)
① Brightness becomes 50% of the original value under standard condition.
② Kick-off voltage at Ta=0 ℃ exceeds 1700 V
LOW
M odule
I
I
-p
p
Symbol
: The value of plus peak Lamp current.
: The value of minus peak Lamp current.
at circuit showed below.
V
Vs
T
P
F
I
L
L
L
L
L
p
&I
-p
50,000
Min.
< 1.1 ×√ 2 × Irms.
L
3.0
−
−
40
−
=6.5 mA rms.
CN2,3,4,5
CN2,3,4,5
:1pin
:2pin
Typ.
630
6.5
4.1
60
−
−
L
Max.
1700
Ａ
∼
4.55
700
7.0
70
−
× V
rms
value.
L ) .
HARISON TOSHIBA LIGHTING Corp.）
mArms
Vrms
Vrms
hour
kHz
Unit
W
Inverter
I
【 Note.6 】
【 Note2 】
I
【 Note3 】
【 Note5 】
L
L
【 Note1 】【 Note.6 】
Ta=0 ℃【 Note4 】
=6.5mArms Ta=25 ℃ 60kHz
=6.5mArms Ta=25 ℃ 60kHz
Remark