LCX028AMT Datasheet, PDF (22/25 Pages) Sony Corporation – 4.6cm (1.8-inch) Black-and-White LCD Panel

LCX028AMT
3. 12-dot Simultaneous Sampling
The horizontal shift register samples signals VSIG1 to VSIG12 simultaneously. This requires phase
matching between signals VSIG1 to VSIG12 to prevent the horizontal resolution from deteriorating. Thus,
phase matching between each signal is required using an external signal delaying circuit before applying
the video signal to the LCD panel.
The block diagram of the delaying procedure using the sample-and-hold method is as follows. The following
phase relationship diagram indicates the phase setting for right scan (RGT = High level). For left scan (RGT =
Low level), the phase settings for signals VSIG1 to VSIG12 are exactly reversed.
VSIG (odd)
S/H
S/H
CK1
S/H
S/H
CK2
S/H
S/H
CK3
S/H
S/H
CK4
S/H
S/H
VSIG (even)
S/H
CK5
S/H
CK6
S/H
CK1
S/H
S/H
CK2
S/H
S/H
CK3
S/H
S/H
CK4
S/H
S/H
CK5
S/H
3 VSIG1
4 _VSIG2
5 VSIG3
6 VSIG4
7 VSIG5
8 VSIG6
9 _VSIG7
10 VSIG8
11 VSIG9
12 VSIG10
13 VSIG11
14 VSIG12
CK6
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