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參數(shù)資料
| 型號： | HD66750 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| 中文描述： | 128 × 128點圖形LCD控制器/驅動器，四灰度函數(shù) |
| 文件頁數(shù)： | 51/96頁 |
| 文件大?。?/td> | 2068K |
| 代理商： | HD66750 |
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HD66750/1
51
n-raster-row Reversed AC Drive
The HD66750/1 supports not only the LCD reversed AC drive in a one-frame unit (B-pattern waveform)
but also the n-raster-row reversed AC drive which alternates in an n-raster-row unit from one to 32 raster-
rows (C-pattern waveform). When a problem affecting display quality occurs, such as crosstalk at high-
duty driving of more than 1/64 duty, the n-raster-row reversed AC drive (C-pattern waveform) can improve
the quality. Determine the number of raster-rows n (NW bit set value + 1) for alternating after confirmation
of the display quality with the actual LCD panel. However, if the number of AC raster-rows is reduced, the
LCD alternating frequency becomes high. Because of this, the charge or discharge current is increased in
the LCD cells.
1 2 3 4 5 6 7 8 9 10 11 12 13
79 80 1 2 3 4 5 6 7 8 9 10 1112 13
79 80 1 2 3
B-pattern
waveform drive
￥ 1/80 duty
1 frame
1 frame
C-pattern
waveform drive
￥ 1/80 duty
￥ 11-raster-row
reversal
￥ Without EORs
C-pattern
waveform drive
￥ 1/80 duty
￥ 11-raster-row
reversal
￥ With EORs
Note: Specify the number of AC drive raster-rows and the necessity of EOR so that the DC bias is not generated for
the liquid crystal.
Figure 34 Example of an AC Signal under n-raster-row Reversed AC Drive
相關PDF資料 |
PDF描述 |
|---|---|
| HD66751TB0 | 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66760 | 104 X 80-dot Graphics LCD Controller/Driver for 256 Colors |
| HD66766R | 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors |
| HD667A66R | 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors |
| HD667B66R | 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HD66750TB0 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66751 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66751S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HD66751TB0 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66753 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Datasheet|ADE-207-347|JAN.31.03|829K |
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