UPD16634A View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD16634A

300-OUTPUT TFT-LCD SOURCE DRIVER (COMPATIBLE WITH 64 GRAY SCALE)

NEC => Renesas Technology 

µPD16634A

9. CAUTIONS ABOUT FRAME INVERSION

In the case of dot inversion, n frame last line and (n+1) frame first line is the same polarity. When write the same

polarity twice; there are two cases as follows.

(1) Last line output in n frame > First line output in (n+1) frame → Positive to write

(2) Last line output in n frame < First line output in (n+1) frame → Not possible to write

µPD16634A has charge buffer and discharge buffer, so need to inversion polarity and write in the case of both

ways.

STB

POL

n frame last line

Discharge buffer

Vertical intervals

(n+1) frame

first line

(n+1) frame

second line

Charge buffer

S2N

VCOM

Hi-Z

Hi-Z

Hi-Z

STB

POL

S2N

n frame last line

Vertical intervals

(n+1) frame

first line

(n+1) frame

second line

Hi-Z

Hi-Z

Hi-Z

VCOM

Hi-Z

Data Sheet S12595EJ2V0DS00

11

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