Dalian GTH070IDW1-E00, Руководство пользователя

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Document Title
GTH 070IDW1-E00 Specification for Road Well Page No. 13
/
26
Docum ent No. Revision 1.0
6.2 Back-Light Unit
The backlight system is an edge-lighting type with 27 LED.
The characteristic of the LED is shown in the following tables.
Item Symbol Min. Typ. Max. Unit Note
LED current IL
－
180
－
mA (2)
LED voltage VL
－
10.5
－
V
Operating LED life time Hr 20,000 － － Hour (1)(2)
Note (1) LED life time (Hr) can be defined as the time in which it continues to
operate under the condition: Ta=25±3
o
C, typical IL value indicated in
the above table until the brightness becomes less than 50%.
Note (2) The “LED life time” is defined as the module brightness decrease to
50% original brightness at Ta=25
℃
and IL=180mA. The LED lifetime
could be decreased if operating IL is larger than 180mA. The constant
current driving method is suggested.
LED Light Bar Circuit
LCD MODULE
WHITE(Ground)
Black
A
Power Supply
1
2