HD66781 Datasheet, PDF (166/196 Pages) Renesas Technology Corp – 720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM

HD66781
Preliminary
Formulas for calculating voltage (Negative polarity) (2)
Grayscale
Grayscale
voltage
voltage
V0
VINN0
V32
V1
VINN1
V33
V2
V8+(V1-V8)*(30/48)
V34
V3
V8+(V1-V8)*(23/48)
V35
V4
V8+(V1-V8)*(16/48)
V36
V5
V8+(V1-V8)*(12/48)
V37
V6
V8+(V1-V8)*(8/48)
V38
V7
V8+(V1-V8)*(4/48)
V39
V8
VINN2
V40
V9
V20+(V8-V20)*(22/24)
V41
V10
V20+(V8-V20)*(20/24)
V42
V11
V20+(V8-V20)*(18/24)
V43
V12
V20+(V8-V20)*(16/24)
V44
V13
V20+(V8-V20)*(14/24)
V45
V14
V20+(V8-V20)*(12/24)
V46
V15
V20+(V8-V20)*(10/24)
V47
V16
V20+(V8-V20)*(8/24)
V48
V17
V20+(V8-V20)*(6/24)
V49
V18
V20+(V8-V20)*(4/24)
V50
V19
V20+(V8-V20)*(2/24)
V51
V20
VINN3
V52
V21
V43+(V20-V43)*(22/23)
V53
V22
V43+(V20-V43)*(21/23)
V54
V23
V43+(V20-V43)*(20/23)
V55
V24
V43+(V20-V43)*(19/23)
V56
V25
V43+(V20-V43)*(18/23)
V57
V26
V43+(V20-V43)*(17/23)
V58
V27
V43+(V20-V43)*(16/23)
V59
V28
V43+(V20-V43)*(15/23)
V60
V29
V43+(V20-V43)*(14/23)
V61
V30
V43+(V20-V43)*(13/23)
V62
V31
V43+(V20-V43)*(12/23)
V63
Note 1) Make sure DDVDH – V0 > 0.5V, DDVDH – V4 > 1.1V, V55-GND > 1.1V
V43+(V20-V43)*(11/23)
V43+(V20-V43)*(10/23)
V43+(V20-V43)*(9/23)
V43+(V20-V43)*(8/23)
V43+(V20-V43)*(7/23)
V43+(V20-V43)*(6/23)
V43+(V20-V43)*(5/23)
V43+(V20-V43)*(4/23)
V43+(V20-V43)*(3/23)
V43+(V20-V43)*(2/23)
V43+(V20-V43)*(1/23)
VINN4
V55+(V43-V55)*(22/24)
V55+(V43-V55)*(20/24)
V55+(V43-V55)*(18/24)
V55+(V43-V55)*(16/24)
V55+(V43-V55)*(14/24)
V55+(V43-V55)*(12/24)
V55+(V43-V55)*(10/24)
V55+(V43-V55)*(8/24)
V55+(V43-V55)*(6/24)
V55+(V43-V55)*(4/24)
V55+(V43-V55)*(2/24)
VINN5
V62+(V55-V62)*(44/48)
V62+(V55-V62)*(40/48)
V62+(V55-V62)*(36/48)
V62+(V55-V62)*(32/48)
V62+(V55-V62)*(25/48)
V62+(V55-V62)*(18/48)
VINN6
VINN7
Rev.0.5, July.31.2003, page 166 of 196