1.85 inch ( 47.0mm )
8X8 DOT MATRIX LED DISPLAY
UVP-2688/2788 SERIES
DESCRIPTION
The UVP-2688/2788 is 1.85 inch ( 47.0mm) height 8X8 dot matrix display.
Single color displays have the choices of three bright colors-AlGaAs red/green/yellow.
Multicolor displays are applicable to two bright colors:green and red orange
All device have black face and white dot.
The AlGaAs red LED chip are made from AlGaAs on a non-transparent GaAs substrate.
The green LED chip are made from GaP on a transparent GaP substrate.
The yellow and red orange LED chip are made from GaAsP on a transparent GaP substrate.
FEATURES
l
Industuy standard size
l
Wide viewing angle
l
Continuous uniform dot matrix.
l
Excellent characters appearance
l
Low power requirement
DEVICES
ABSOLUTE MAXIMUM RATINGS
@ T
A
=25
o
C
GREEN
YELLOW RED ORANGE
UNIT
36
32
36
mW
100
80
100
mA
13
10
13
mA
0.17
0.12
0.17
mA/
o
C
5
5
5
V
11/14/2000
PACKAGE DIMENSION
INTERNAL CIRCUIT
DIAGRAM
AlGaAs RED
36
Column Anode
PARAMETER
Power Dissipation Per Dot
Fig. 1
Fig. 2
UVP-2688
0.20
PART NO.
DESCRIPTION
UVP-2788
Column Anode
Continuous Forward Current Per Dot
Derating Linear From 25
o
C Per Dot
Storage Temperature Range
Solder Temperature 1/16 inch Below Seating Plane for 3 Seconds at 260
o
C
Peak Forward Current Per Dot
Reverse Voltage Per Dot
Operating Temperature Range
5
-35
o
Cto+85
o
C
-35
o
Cto+85
o
C
125
15
Unity Opto Technology Co., Ltd.
1.85 inch ( 47.0mm )
8X8 DOT MATRIX LED DISPLAY
UVP-2688/2788 SERIES
PACKAGE DIMENSIONS
Fig. 1
INTERNAL CIRCUIT DIAGRAM
UVP-2688A
UVP-2788A
Fig. 2
11/14/2000
Unity Opto Technology Co., Ltd.
1.85 inch ( 47.0mm )
8X8 DOT MATRIX LED DISPLAY
UVP-2688/2788 SERIES
UVP-2688/2788 SERIES
PIN CONNECTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
11/14/2000
ANODE CO. 1
ANODE COL. 1G
NO PIN
ANODE COL. 1E
ANODE COL. 3G
NO PIN
ANODE COL. 3E
CATHODE ROW 1
CATHODE ROW 1
ANODE COL. 3
UVP-2688
CATHODE ROW 2
ANODE COL. 2
NO PIN
CATHODE ROW 4
ANODE COL. 4
NO PIN
CATHODE ROW 6
ANODE COL. 8G
ANODE COL. 8E
NO PIN
CATHODE ROW 8
ANODE COL. 8
NO PIN
ANODE COL. 4E
CATHODE ROW 6
ANODE COL. 6
ANODE COL. 6G
PIN
CONNECTION
ANODE COL. 6E
CATHODE ROW 8
UVP-2788
CATHODE ROW 2
ANODE COL. 2G
ANODE COL. 2E
CATHODE ROW 4
ANODE COL. 4G
CATHODE ROW 7
ANODE COL. 7G
NO PIN
ANODE COL. 7E
CATHODE ROW 7
ANODE COL. 7
CATHODE ROW 5
CATHODE OW 5
ANODE COL. 5
ANODE COL. 5G
NO PIN
ANODE COL. 5E
CATHODE ROW 3
CATHODE ROW 3
Unity Opto Technology Co., Ltd.
1.85 inch ( 47.0mm )
8X8 DOT MATRIX LED DISPLAY
UVP-2688/2788 SERIES
ELECTRICAL/OPTICAL CHARACTERISTICS
AlGaAs RED (UVP-2688AC)
@ T
A
=25
o
C
SYMBOL
MIN.
TYP.
MAX.
UNIT
I
V
6300
12000
cd
p/Hue
660/638
nm
35
nm
V
F
1.8
2.4
V
I
R
100
A
I
V
-m
2:1
GREEN (UVP-2688AG) & (UVP-2788AA GREEN)
@ T
A
=25
o
C
SYMBOL
MIN.
TYP.
MAX.
UNIT
I
V
1780
4800
cd
p/Hue
565/569
nm
30
nm
V
F
2.1
2.6
V
I
R
100
A
I
V
-m
2:1
YELLOW (UVP-2688AY)
@ T
A
=25
o
C
SYMBOL
MIN.
TYP.
MAX.
UNIT
I
V
1780
4800
cd
p/Hue
585/588
nm
35
nm
V
F
2.1
2.6
V
I
R
100
A
I
V
-m
2:1
RED ORANGE (UVP-2788AA RED ORANGE)
@ T
A
=25
o
C
SYMBOL
MIN.
TYP.
MAX.
UNIT
I
V
1780
4800
cd
p/Hue
630/621
nm
40
nm
V
F
2.0
2.6
V
I
R
100
A
I
V
-m
2:1
11/14/2000
Reverse Current, any Dot
V
R
= 5 V
Luminous Intensity Matching Ratio
I
F
= 10 mA
Spectral Line Half-Width
I
F
= 20 mA
Forward Voltage, any Dot
I
F
= 20 mA
Average Luminous Intensity
I
p
= 80 mA 1/16 Duty
Peak Emission Wavelength
I
F
= 20 mA
PARAMETER
TEST CONDITION
Spectral Line Half-Width
Reverse Current, any Dot
Luminous Intensity Matching Ratio
I
F
= 20 mA
V
R
= 5 V
I
F
= 10 mA
Forward Voltage, any Dot
TEST CONDITION
PARAMETER
PARAMETER
TEST CONDITION
I
p
= 80 mA 1/16 Duty
I
F
= 20 mA
I
F
= 20 mA
Spectral Line Half-Width
I
F
= 20 mA
Average Luminous Intensity
Peak Emission Wavelength
Luminous Intensity Matching Ratio
I
F
= 10 mA
Forward Voltage, any Dot
Average Luminous Intensity
I
p
= 80 mA 1/16 Duty
I
F
= 20 mA
Reverse Current, any Dot
V
R
= 5 V
Peak Emission Wavelength
I
F
= 20 mA
PARAMETER
TEST CONDITION
Average Luminous Intensity
I
p
= 80 mA 1/16 Duty
Peak Emission Wavelength
I
F
= 20 mA
Spectral Line Half-Width
I
F
= 20 mA
Luminous Intensity Matching Ratio
I
F
= 10 mA
I
F
= 20 mA
Reverse Current, any Dot
Forward Voltage, any Dot
V
R
= 5 V
Unity Opto Technology Co., Ltd.
1.2 inch ( 30.42mm )
5X7 DOT MATRIX LED DISPLAY
UVP-2688/2788 SERIES
TYPICAL ELECTRICAL/OPTICAL CHARACTERISTIC CURVES
( Ambient Temperature =25
o
C
Unless Otherwise Noted )
11/14/2000
Relative Luminous Intensity
Fig 1. RELATIVE LUMINOUS INTENSITY
VS. WAVELENGTH
0
0.5
1
500 525 550 575 600 625 650 675 700 725 750
G Y
E
C
0.0
1.0
2.0
3.0
4.0
0
5
10
15
20
25
30
Relative Luminous Intensity
Forward Current I
F
(mA)
Fig 2. RELATIVE LUMINOUS INTENSITY VS.
FORWARD CURRENT
G
0
5
10
15
20
0 10 20 30 40 50 60 70 80 90
Forward Current I
F
(mA)
E G
C
Y
Forward Current I
F
(mA)
Forward Voltage (V)
Fig 5. FORWARD CURRENT VS.
FORWARD VOLTAGE
0
50
100
150
0.0
1.0
2.0
3.0
4.0
5.0
E
G
Forward Current I
F
(mA)
Forward Voltage (V)
Fig 6. FORWARD CURRENT VS.
FORWARD VOLTAGE
0
50
100
150
0.0
1.0
2.0
3.0
4.0
5.0
C
Y
0.0
1.0
2.0
3.0
4.0
0
5
10
15
20
25
30
Relative Luminous Intensity
Forward Current I
F
(mA)
Fig 4. RELATIVE LUMINOUS INTENSITY VS.
FORWARD CURRENT
C
Y
Unity Opto Technology Co., Ltd.
Ambient Temperature (
o
C
)
Fig 3. ALLOWABLE DC CURRENT
VS. AMBIENT TEMPERATURE
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