LCD 驱动IC原理简介.ppt

LCD 驅動IC原理簡介
David Tsai
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Outline
Introduction of LCD Driving Theory
TN/STN LCD Driver
AM-LCD Gate Driver
AM-LCD Source Driver
AM-LCD Driver Design Consideration
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LC & LCD Type
Liquid Crystal
Semectic LC
Nematic LC
Cholesteric LC
Disk LC
Liquid Crystal Display
Twist Nematic (TN)
Super Twist Nematic (STN)
Double-layer STN (DSTN)
Film STN (FSTN)

In Plane Switch (IPS)
Vertical Alignment (VA)
Multi-domain VA (MVA)
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LCD Driving Theory – TN type
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TN & STN V-T Transfer Curve
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Static Driving Method Used in TN
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Static Driving Example
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STN LCD Driving Diagram
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STN LCD Driving Waveform Diagram
Column 1
暗
亮
亮
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Limitation on STN LCD Resolution
=> Selection Ratio
=> N => SR
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