參數(shù)資料
型號(hào)： HD66766R
廠商： Hitachi,Ltd.
英文描述： 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors
中文描述： 132 × 176點(diǎn)圖形LCD控制器/驅(qū)動(dòng)器的65K色
文件頁(yè)數(shù)： 69/97頁(yè)
文件大?。?/td> 681K
代理商： HD66766R
HD66766R Rev. 1.0-1 / September 2002
69
n-raster-row Reversed AC Drive
The HD66766R 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 64 raster-
rows (C-pattern waveform). When a problem affecting display quality occurs, such as cross-talk 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.
Figure 53 Example of an AC Signal under n-raster-row Reversed AC Drive
Notice : Specify the number of AC drive raster-rows and the necessity of EOR so that the DC bias is not generated to the LCD.
3 4
5 6
7 8 9 10 11 12 13
175
1 frame
176 1 2 3 4 5 6
7 8 9 10 11 12 13
175
1 2 3
1 frame
176
-wave form drive
- 1/176 duty
- 11 raster-row reversal
- Without EORs
B-pattern waveform drive
-1/176 duty
C-pattern
C-pattern waveform drive
- 1/176 duty
- 11 raster-row reversal
- With EORs
1 2
相關(guān)PDF資料
PDF描述
HD667A66R 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors
HD667B66R 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors
HD66780FH LAMPS, STACKABLE INDICATOR
HD66780FS Dot Matrix Liquid Crystal Display Controller and Driver
HD66780 Dot Matrix Liquid Crystal Display Controller and Driver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD66773R 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:262,144-color, 132 x 176-dot Graphics Controller Driver for TFT LCD panels
HD66780 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot Matrix Liquid Crystal Display Controller and Driver
HD66780FH 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot Matrix Liquid Crystal Display Controller and Driver
HD66780FS 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot Matrix Liquid Crystal Display Controller and Driver
HD66781 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM
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