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| 型號(hào)： | MSM6262-04GS-BK |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 顯示控制器 |
| 英文描述： | 48 X 80 DOTS DOT MAT LCD DRVR AND DSPL CTLR, PQFP80 |
| 封裝： | 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 46/53頁 |
| 文件大?。?/td> | 602K |
| 代理商： | MSM6262-04GS-BK |
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Semiconductor
MSM6262-04
50/53
FEDL6262-04-03
LCD duty and bias
No. of lines
2 lines
4 lines
Duty
Bias
1/16
1/24
1/32
1/48
1/5
1/6
1/7
1/8
Above are examples of relation between LCD duty and bias. Use these values for reference,
for they vary depending on the characteristics of LCD panel.
The value of resistor on bias circuit is determined by the operational margin and power
consumption. To make the power consumption lower, the value of resistor has to be larger,
but it makes the LCD driving output impedance high and causes the distortion on the LCD
driving waveform.
If a large LCD panel is used, the value of the resistor should be much lower because the
LCD capacitance increases.
Connecting a bypass capacitor to the bias resistor in parallel can improve the distortion of
LCD driving waveform. However, connecting a capacitor of too large value may cause a
level shift of the bias voltage.
So, it has to be determined carefully after checking experimentally.
Followings are the reference values.
R = 2 to 10 kW
VR = 10 to 50 kW
r = 0.2 to 2 kW
C = 0.0022 to 0.047 mF
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