LCX029CRT データシートの表示（PDF） - Sony Semiconductor
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LCX029CRT Datasheet PDF : 27 Pages
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LCX029CRT
Input Signals
1. Input signal voltage conditions (VSS = 0V)
Item
Symbol
Min.
Typ.
Max.
Unit
H shift register input voltage (Low) VHIL
–0.5
0.0
HST, HCK1, HCK2, RGT (High) VHIH
4.5
5.0
0.4
V
5.5
V
V shift register input voltage (Low) VVIL
–0.5
0.0
HB, VB, BLK, VST, VCK,
PCG, ENB, DWN
(High) VVIH
4.5
5.0
0.4
V
5.5
V
Video signal center voltage
Video signal input range∗1
Common voltage of panel∗2
VVC
Vsig
Vcom
7.4
7.5
7.6
V
VVC – 5.0
7.5
VVC + 5.0 V
VVC – 0.5 VVC – 0.4 VVC – 0.3 V
Uniformity improvement signal
input voltage (PSIG)∗3
VpsigB VVC ± 4.9 VVC ± 5.0 VVC ± 5.1
VpsigG VVC ± 1.8 VVC ± 1.9 VVC ± 2.0 V
∗1 Input video signal shall be symmetrical to VVC.
∗2 The typical value of the common pad voltage may lower its suitable voltage according to the set construction
to use. In this case, use the voltage of which has maximum contrast as typical value.
When the typical value is lowered, the maximum and minimum values may lower.
∗3 Input a uniformity improvement signal PSIG in the same polarity with video signals VSIG1 to VSIG12 and
which is symmetrical to VVC. PSIG wave form is 2 steps like below, in the upper chart, upper shows signal
level of the 1st step, lower shows signal level of the 2nd step. Also, the rising and falling of PSIG are
synchronized with the rising of PCG pulse, and the rise time trPSIG and fall time tfPSIG are suppressed
within 450ns (as shown in a diagram below).
The optimum input voltage of PSIG may be changed according as drive conditions of the drive side.
Input waveform of uniformity improvement signal PSIG
PSIG
90%
PsigB
PsigG
VVC
PCG
10%
trPSIG
tfPSIG
PRG∗4
∗4 PRG shows the time of the 1st step of PSIG signal, and it is not input to the panel.
Level Conversion Circuit
The LCX029CRT has a built-in level conversion circuit in the clock input unit on the panel. The input signal
level increases to HVDD or VVDD. The VCC of external ICs are applicable to 5 ± 0.5V.
–6–
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