LCX034ALT
1.8cm (0.7 Type) Black-and-White LCD Panel
Description
The LCX034ALT is a 1.8cm diagonal active matrix
TFT-LCD panel addressed by polycrystalline silicon
super thin film transistors with a built-in peripheral
driving circuit. Use of three LCX034ALT panels
provides a full-color representation. The striped
arrangement suitable for data projectors is capable
of displaying fine text and vertical lines.
The adoption of DMS
∗
1
structure and high light
resistance structure realizes a high luminance
screen. And cross talk free circuit and ghost free
circuit contribute to high picture quality.
This panel has a polysilicon TFT high-speed
scanner and built-in function to display images
up/down and/or right/left inverse. The built-in 5V
interface circuit leads to lower voltage of timing and
control signals.
The panel contains an active area variable circuit
which supports SVGA/VGA/PC98
∗
2
data signals by
changing the active area according to the type of
input signal. In addition, double-speed processed
NTSC/PAL can also be supported.
∗
1
Dual Metal Shield
∗
2
“PC98” is a treadmark of NEC Corporation.
Features
•
Number of active dots: 485,000 (0.7 Type, 1.8cm in diagonal)
•
Accepts the computer requirements of SVGA (804
×
604), VGA (644
×
484) and PC98 (644
×
404) platforms
•
Supports NTSC (644
×
484) and PAL (762
×
572) by processing the video signal at double speed
•
High optical transmittance: 13% (typ.)
•
Built-in cross talk free circuit and ghost free circuit
•
High contrast ratio with normally white mode
•
Built-in H and V drivers (built-in input level conversion circuit, 5V driving possible)
•
Up/down and/or right/left inverse display function
•
Dust-proof glass used
Element Structure
•
Dots: 804 (H)
×
604 (V) = 485,616
•
Built-in peripheral driver using polycrystalline silicon super thin film transistors
Applications
•
Liquid crystal data projectors
•
Liquid crystal projectors, etc.
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E99665A04
LCX034ALT
Absolute Maximum Ratings
(V
SS
= 0V)
•
H driver supply voltage
HV
DD
•
V driver supply voltage
VV
DD
•
Common pad voltage
COM
•
H shift register input pin voltage HST, HCK1, HCK2,
RGT
•
V shift register input pin voltage VST, VCK, PCG,
BLK, ENB, DWN
MODE1, MODE2, MODE3
•
Video signal input pin voltage
SIG1, SIG2, SIG3, SIG4,
SIG5, SIG6, PSIG
∗
•
Operating temperature
Topr
•
Storage temperature
Tstg
∗
Panel temperature inside the antidust glass
–1.0 to +20
–1.0 to +20
–1.0 to +17
–1.0 to +17
–1.0 to +17
V
V
V
V
V
–1.0 to +15
–10 to +70
–30 to +85
V
°C
°C
Operating Conditions
(V
SS
= 0V)
•
Supply voltage
HV
DD
15.5 ± 0.5V
VV
DD
15.5 ± 0.5V
•
Input pulse voltage (Vp-p of all input pins except video signal and uniformity improvement signal input pins)
Vin
5.0 ± 0.5V
Pin Description
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
Symbol
PSIG
SIG4
SIG3
SIG5
SIG2
SIG6
SIG1
HV
DD
RGT
MODE3
MODE2
MODE1
Description
Uniformity improvement signal
Video signal 4 to panel
Video signal 3 to panel
Video signal 5 to panel
Video signal 2 to panel
Video signal 6 to panel
Video signal 1 to panel
Power supply for H driver
Drive direction pulse for H shift
register (H: normal, L: reverse)
Display area switching 3
Display area switching 2
Display area switching 1
Pin
No.
13
14
15
16
17
18
19
20
21
22
23
24
–3–
Symbol
HST
HCK1
HCK2
Vss
BLK
ENB
VCK
VST
PCG
DWN
VV
DD
COM
Description
Start pulse for H shift register
drive
Clock pulse for H shift register
drive
Clock pulse for H shift register
drive
GND (H, V drivers)
Black Frame display pulse
Enable pulse for gate selection
Clock pulse for V shift register
drive
Start pulse for V shift register
drive
Improvement pulse for uniformity
Drive direction pulse for V shift
register (H: normal, L: reverse)
Power supply for V driver
Common voltage of panel
LCX034ALT
Input Equivalent Circuit
To prevent static charges, protective diodes are provided for each pin except the power supplies. In addition,
protective resistors are added to all pins except the video signal inputs. All pins are connected to V
SS
with a
high resistor of 1MΩ (typ.). The equivalent circuit of each input pin is shown below: (Resistance value: typ.)
(1) SIG1, SIG2, SIG3, SIG4, SIG5, SIG6, PSIG
HV
DD
Input
1MΩ
Signal line
(2) HCK1, HCK2
HV
DD
250Ω
Input
250Ω
1MΩ
250Ω
Level conversion circuit
(2-phase input)
250Ω
1MΩ
(3) RGT, MODE1, MODE2, MODE3
HV
DD
2.5kΩ
Input
1MΩ
2.5kΩ
Level conversion circuit
(single-phase input)
(4) HST
HV
DD
250Ω
Input
1MΩ
250Ω
Level conversion circuit
(single-phase input)
–4–
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