DMC-20171 Optrex America Inc, DMC-20171 Datasheet - Page 5
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DMC-20171
Manufacturer Part Number
DMC-20171
Description
LCD MODULE 20X1 CHARACTER
Manufacturer
Optrex America Inc
Series
DMC-20171r
Specifications of DMC-20171
Display Type
TN - Twisted Nematic
Display Mode
Reflective
Number Of Digits/alpha
20
Outline L X W X H
*
Viewing Area
154.00mm L x 15.30mm W
Backlight
Without Backlight
Display Format
20 x 1
Character Size
11.50mm H x 6.70mm W
Character Format
5 x 7 CURS
Voltage - Supply
5.0V
Dot Size
1.30mm W x 1.30mm H
Interface
*
Operating Temperature
0°C ~ 50°C
Other names
73-1021
OP120
OP120
Recommended
Contrast Ratio
Viewing Angle
Response
3.Optical Specif ications
Note 1 :
Note 1 : Contrast ratio is definded as follows.
Note 2 : The time that the luminance level reaches 90% of the saturation level from 0% when ON
Note 3 : The time that the luminance level reaches 10% of the saturation level from 100% when OFF
Note 4 : Definition of Driving Voltage V
3.1.LCD Driving Voltage
3.2.Optical Characteristics
LCD Driving Voltage
Time
DMC20171 (AA) No.2000-0077
Parameter
Parameter
minimum and maximum shows tolerance of the operating voltage. The specified contrast ratio and
response time are not guaranteed over the entire range.
L
L
signal is applied.
signal is applied.
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 V
as follows.
Vth1 : The voltage V
Vth2 : The voltage V
ON
OFF
CR = L
V
Rise
Decay Note 3
Voltage (Applied actual waveform to LCD Module) for the best contrast. The range of
: Luminance of the ON segments
: Luminance of the OFF segments
D
V
measured atθ= 10 ゚, φ=270 ゚ on the segment which the ON signal is applied to.
measured atθ= 40 ゚, φ=270 ゚ on the segment which the OFF signal is applied to.
= (Vth1+Vth2) / 2
O-P
Note 1
Note 1
OFF
Note 2
1 / (
〈 ON SIGNAL 〉
/ L
ON
f
F
× A )
CR = L
O-P
O-P
V
Symbol
Symbol
CC
T
T
that should provide 50% of the satulation level in the luminance
that should provide 26% of the satulation level in the luminance
CR
OFF
ON
-V
ON
EE
Ta=25℃, 1/8 Duty, 1/4 Bias, V
/ L
D
OFF
θ=20 ゚, φ=270 ゚
Conditions
Conditions
Ta=25℃
Ta=50℃
Ta= 0℃
-
-
OPTREX
OPTREX CORPORATION
1 /
〈 OFF SIGNAL 〉
f
F
Shown in 3.3
D
Min.
Min.
3.3
3.0
=3.5V (Note 4), θ=10 ゚, φ=270 ゚
-
-
-
-
( B-2 ) × V
Typ.
Typ.
150
3.5
-
-
15
80
D
is definded
O-P
Max.
Max.
230
160
4.0
3.7
-
-
/ B
Page 5/15
Units
Units
ms
ms
V
V
V