NL12876BC26_21 NEC, NL12876BC26_21 Datasheet - Page 8

• Manufacturer Part Number: NL12876BC26_21
• Description: TFT COLOR LCD MODULE
• Manufacturer: NEC

Lamp current
Lamp voltage
Lamp turn on voltage
Oscillator frequency
Note1: When IL and/or VS are lower than Min. value, lamps will not turn on.
Note2: Recommended value of 'Ft'
Note3: The lamp current should be measured by high-frequency current meter at the low voltage
Note4: The inverter power supply has a big influence on lighting-up characteristics and the lifetime of the
(2) Backlight
Parameter
lamp. When design the inverter power supply, evaluate it sufficiently.
If Ft is not the recommended value, Beat noise may display on the screen, because of interference
between Ft frequency and Hsync frequency.
terminal. Two lamps contain in the one lamp holder, and both lamps are connected to one low
voltage cable. Therefore, the lamp current at low voltage terminal is sum of two lamps (12mA
Typ.)
1) 'Ft' should be within the specification.
2) Ft = 1/ 4th × (2n-1)
and
Symbol
VL
VS
IL
Ft
1500
Min.
950
3.0
−
50
th: Hsync period
n: a natural number (1,2,3…)
Typ.
700
6.0
−
−
−
Max.
6.5
−
−
−
60
mArms
Vrms
Vrms
Vrms
Unit
kHz
for each lamp,
IL=6.0mArms: 500cd/m
Note1
Ta = 25°C, Note1
Ta = 0°C, Note1
Note2
DOD-M-0362
Remarks
NEC Corporation
-
(Ta = 25°C)
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