C-51850NFQJ-LG-ACN (AC) No. 2005-0250 OPTREX CORPORATION Page 7/17
3. Optical Specifications
3.1. LCD Driving Voltage
Parameter Symbol Conditions Min. Typ. Max. Units
Recommended Ta= -20°C - - 5.1 V
LCD Driving Voltage VCC-VEE Ta=25°C 4.3 4.7 5.1 V
Note 1 Ta=70°C 4.2 - - 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, 1/16 Duty, 1/4 Bias, VOD=4.7V (Note 4), θ= 0°, φ=-°
Parameter Symbol Conditions Min. Typ. Max. Units
Contrast Ratio
Note 1 CR θ= 0°C , φ=-° - 60 -
Viewing Angle Shown in 3.3
Response Rise
Note 2 TON - - 75 150 ms
Time Decay
Note 3 TOFF - - 150 230 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
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 the voltage VO-P when the contrast ratio (CR=LON / LOFF) is at its
maximum.
V
O-P
f
F
( B-2 )
×
VO-P / B
1 / ( fF
×
A )
<OFF SIGNAL>
<ON SIGNAL>
C-51850NFQJ-LG-ACN (AC) No. 2005-0250 OPTREX CORPORATION Page 8/17
3.3. Definition of Viewing Angle and Optimum Viewing Area
*Point shows the point where contrast ratio is measured. : θ= 0°, φ= -°
*Driving condition: 1/16 Duty, 1/4 Bias, VOD=4.7V, fF=84.4Hz
270
°
0
°
90
°
180
°
270
°
θ
φ
135
°
315
°225
°
45
°
180
°
90
°
(
φ
= 0
°
)
φ
10
20
30
40
50
θ
*Area
shows typ. CR20(Measuring Spot : 3.0mmφ)
3.4. System Block Diagram
Halogen bulb
Computer
Rotation Table (
θ
,
φ
)
Temperature Chamber
LCD
Optical Fiber
Waveform Generator
Control Unit &
#1980A WB
Photometer
φ
θ
C-51850NFQJ-LG-ACN (AC) No. 2005-0250 OPTREX CORPORATION Page 9/17
4. I/O Terminal
4.1. Pin Assignment
CN1
No. Symbol Function
1 VSS Power Supply (0V, GND)
2 VCC Power Supply for Logic
3 VEE Power Supply for LCD Drive
4 RS Register Select Signal
5 R/W Read/Write Select Signal H : Read L : Write
6 E Enable Signal (No pull-up Resister)
7 DB0 Display Data
8 DB1 Display Data
9 DB2 Display Data
10 DB3 Display Data
11 DB4 Display Data
12 DB5 Display Data
13 DB6 Display Data
14 DB7 Display Data
15 LED +A LED Anode Terminal
16 LED -K LED Cathode Terminal
4.2. Example of Power Supply
It is recommended to apply a potentiometer for the contrast adjust due to the
tolerance of the driving voltage and its temperature dependence.
MODULE
VCC
VEE
VSS
VCC (+Voltage)
VR=10~20K
VSS (0V)
VR

C-51850NFQJ-LG-ACN

Mfr. #:
Manufacturer:
Kyocera Display
Description:
LCD Character Display Modules & Accessories White Transmissive Green LED Backlight
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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