DT035TFT Datasheet, PDF (9/13 Pages) List of Unclassifed Manufacturers – LCD Module Product Specification

Displaytech Ltd _{LCD MODULE DT035TFT / DT035TFT-TS Version: 1.1}
9. Backlight specification
Item
Supply voltage
Forward current
Uniformity
Color coordination
Symbol
Vf
If
ΔBp
X
Y
Condition
If=20mA
If=20mA
Min
18.0
---
70
0.275
0.275
(Vcc=3.3V, Vss=0V, Ta=25°C)
Typ Max Unit Note
19.2 20.4
V
1
---
20
mA
2
---
---
%
--- 0.315 ---
--- 0.315 ---
LED circuit diagram:
Constant current If=20mA; Vf=19.2V(typ)
Note:
1)
2)
The LED’s driver mode needs to be constant current mode.
Permanent damage to the device may occur if maximum values are exceeded. Functional operation should be
restricted to the conditions described under normal operating conditions.
10.Optical Characteristics
Item
Brightness
Uniformity
Viewing Angle
Contrast ratio
Response Time
White
Red
Green
Blue
NTSC Ratio
Symbol
Bp
ΔBp
θ1
(Ф=90°
or 270°)
θ2
(Ф=0°
or
180°)
Cr
Tr
Tf
x
y
x
y
x
y
x
y
S
Condition
θ=0º
Ф=0º
Cr≥10
θ=0º
Ф=0º
θ=0º
Ф=0º
(Vcc=3.3V, Vss=0V, Ta=25°C)
Min Typ Max Unit Note
220
---
--- cd/m²
1
70
---
---
%
1, 2
-50 ~ 45
-60 ~ 60
deg
3
---
400
---
---
4
---
20
30
ms
5
0.231 0.281 0.331
0.266 0.316 0.366
0.531 0.581 0.631
0.264 0.314 0.364
0.284 0.334 0.384
---
1, 6
0.536 0.586 0.636
0.097 0.147 0.197
0.052 0.102 0.152
---
50
---
%
8