参数资料
型号: EPL43102
英文描述: Graphic STN LCD Drivers with Built-in RAM
中文描述: 图形STN液晶显示器驱动器,内置内存
文件页数: 26/64页
文件大小: 280K
代理商: EPL43102
43 COM / 102 SEG LCD DRIVER
The information in this document is subject to change without notice.
27
VLCD voltage (V0) is resistively divided into four voltage levels (V1, V2, V3, V4), and
those output impedance are converted by the voltage follower (OPA) for increasing drive
capability. Total 6 levels LCD reference voltage ( V0,V1,V2,V3,V4,VSS ) is generated by
the voltage follower circuits.
LCD Bias
V1
V2
V3
V4
1/8
0.875*V0
0.750*V0
0.250*V0
0.125*V0
1/7.5
0.865*V0
0.735*V0
0.265*V0
0.135*V0
1/7
0.855*V0
0.715*V0
0.285*V0
0.145*V0
1/6.5
0.845*V0
0.690*V0
0.310*V0
0.155*V0
1/6
0.835*V0
0.665*V0
0.335*V0
0.165*V0
1/5.5
0.820*V0
0.635*V0
0.365*V0
0.180*V0
1/5
0.800*V0
0.600*V0
0.400*V0
0.200*V0
1/4.5
0.780*V0
0.555*V0
0.445*V0
0.220*V0
1/4
0.750*V0
0.500*V0
0.250*V0
1/3.5
0.715*V0
0.430*V0
0.570*V0
0.285*V0
1/3
0.665*V0
0.335*V0
0.665*V0
0.335*V0
Different duty radio requires different bias level. For optimum bias level, BL can be
calculated from:
1
+
=
ratio
Duty
B
L
Changing the bias system from the optimum will have a consequence on the contrast
and viewing angle.
The LCD Bias affects the display quality. But for reducing the current consumption, the
unsuitable bias may be selected. Therefore, the LCD Bias could be selected by “Select
LCD bias” instruction.
相关PDF资料
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