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PDF ATM4825A Data sheet ( Hoja de datos )
| Número de pieza | ATM4825A | |
| Descripción | LCD Module | |
| Fabricantes | AZ DISPLAYS | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ATM4825A (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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AZ DISPLAYS
SPECIFICATIONS FOR
LIQUID CRYSTAL DISPLAY
CUSTOMER APPROVAL
※PART NO. : ATM4825A SERIES (AZ DISPLAYS VER1.0)
APPROVAL
COMPANY
CHOP
CUSTOMER
COMMENTS
AZ DISPLAYS ENGINEERING APPROVAL
DESIGNED BY
CHECKED BY
APPROVED BY
1 page  
ATM4825A SERIES TFT GRAPHIC MODULE VER1.0
3.2 The Characteristics Of LED Backlight
3.2.1 Electrical-Optical Characteristics Of LED Backlight (Ta=25ºC)
Item
Forward Voltage(1)(5)
Forward Current(5)
Luminance(3)
Uniformity(2)
Chroma coordinate
Lifetime(4)
Symbol
Vf
If
Lv
Δ
x
y
-
Condition
--
Vf = 5V
Vf = 5V
(Lvmin/Lvmax)%
Vf = 5V
Vf = 5V
Min
3
--
200
70%
0.26
0.28
-
Typ
5
206
250
75%
--
--
20000
Max
5.5
--
--
--
0.36
0.38
-
Unit
V
mA
cd/㎡
-
-
-
Hours
NOTE:
(1) Forward voltage means voltage applied to Pin21 & Pin22
(2)The luminance is the average value of 5 points,The measurement instrument is BM-7 luminance
colorimeter.The diameter of aperture is Φ5mm
(3) Luminance when LCM displaying white color.
(4) Backlight lifetime means luminance value larger than half of the original after 20000 hours’ continuous
working.
(5) Input current of Pin 21 might change because the voltage of PIN21 will affect the efficiency of backlight
driving circuit, but current for LEDs will keep constant within the range of input voltage.
3.2.2 Backlight Control Circuit For LCM（2x6=12 pcs LED）
B L D R IV IN G
C IR C U IT
22 :0V
21 :+3V ~5.5V IN
P IN 22 is connected to P IN 2(V S S ) internally
3.2.3 LED Characteristics Curves（for single led）
1.Forward current VS.Ambient Temperature
25
20
15
10
5
0
-30 0 25 50 80 100
Ambient Temperature
2.Forward current VS Forward Voltage
30
25
20
15
10
5
0
2345
Forward Voltage
AZ DISPLAYS
4
5 Page 
ATM4825A SERIES TFT GRAPHIC MODULE VER1.0
10.0 RELIABILITY TEST
NO Test Item
Description
Test Condition Remark
1
High temperature
storage
Applying the high storage
temperature Under normal humidity for a
long time Check normal performance
80 ºC
96hrs
2
Low temperature
storage
Applying the low storage temperature
Under normal humidity for a long time
Check normal performance
-30ºC
96hrs
3
High temperature
Operation
4
Environmental
Test
Low temperature
Operation
High
5 temperature/High
Humidity Storage
Apply the electric stress(Voltage and
current) Under high temperature for a
long time
Apply the electric stress Under low
temperature for a long time
Apply high temperature and high
humidity storage for a long time
70 ºC
96hrs
-20ºC
96hrs
90% RH
40ºC
96hrs
Note1
Note1
Note2
Note2
Apply the low and high temperature cycle
-30ºC＜＞25ºC＜＞80ºC ＜＞25ºC
6
Temperature Cycle 30min 10min 30min 10min
-30ºC/80ºC
10 cycle
1 cycle
Check normal performance
7
Mechanical
Test
Vibration
test(Package state)
Applying vibration to product check
normal performance
Freq:10~55~10Hz
Amplitude:0.75mm
1cycle time:1min
X.Y.Z every
direction for 15
cycles
8
Shock test(package
state)
Applying shock to product check normal
performance
Drop them through
70cm height to
strike horizontal
plane
9 Other
Remark
Note1:Normal operations condition (25ºC±5ºC).
Note2:Pay attention to keep dewdrops from the module during this test.
AZ DISPLAYS
10
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet ATM4825A.PDF ] | |
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