F-51852GNFJ-SLW-AEN (AE) No. 2005-0268 OPTREX CORPORATION Page 13/23
3. Optical Specifications
3.1. LCD Driving Voltage
Parameter Symbol Conditions Min. Typ. Max. Units
Recommended Ta= -20°C - - 13.9 V
LCD Driving Voltage VDD-V5 Ta=25°C 12.2 13.2 14.1 V
Note 1 Ta=70°C 11.8 - - V
Note 1 : Voltage (Applied actual waveform to LCD Module) for the best contrast. The
range of minimum and maximum shows tolerance of the operating voltage. The
specified contrast ratio and response time are not guaranteed over the entire range.
3.2. Optical Characteristics
Ta=25°C, 1/65 Duty, 1/9 Bias, VOD=13.2V (Note 4), θ= 0°, φ=-°
Parameter Symbol Conditions Min. Typ. Max. Units
Contrast Ratio
Note 1 CR θ= 0°C , φ=-° - 4.5 -
Viewing Angle Shown in 3.3
Response Rise
Note 2 TON - - 150 230 ms
Time Decay
Note 3 TOFF - - 200 300 ms
Note 1 :Contrast ratio is definded as follows. (CR = LON / LOFF)
LON : Luminance of the ON segments
LOFF: Luminance of the OFF segments
Measuring Spot : 3.0mmφ
Note 2 :The time that the luminance level reaches 90% of the saturation level from 0%
when ON signal is applied.
Note 3 :The time that the luminance level reaches 10% of the saturation level from
100% when OFF signal is applied.
Note 4 :Definition of Driving Voltage VOD
VOD=VCC-VADJ-VBE
Assuming that the typical driving waveforms shown below are applied to the LCD
Panel at 1/A Duty - 1/B Bias (A: Duty Number, B: Bias Number). Driving voltage
VOD is definded as follows.
VOD = (Vth1+Vth2) / 2
Vth1: The voltage VO-P that should provide 70% of the saturation level in the
luminance at the segment which the ON signal is applied to.
Vth2: The voltage VO-P that should provide 20% of the saturation level in the
luminance at the segment which the OFF signal is applied to.
Vo-p
1 /f
F
( B-2 )
×
Vo-p/B
1/( f
F
×
A )
( OFF SIGNAL )
( ON SIGNAL )
