Description
The LCX026BLT is a 2.3cm diagonal active matrix
TFT-LCD panel addressed by polycrystalline silicon
super thin film transistors with a built-in peripheral
driving circuit. Use of three LCX026BLT 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 an advanced on-chip black matrix
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
1
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
"PC98" is a treadmark of NEC Corporation.
Features
Number of active dots: 485,000 (0.9-inch, 2.3cm 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: 18% (typ.)
Built-in cross talk free circuit and ghost free circuit
High contrast ratio with normally white mode: 350 (typ.)
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.
LCX026BLT
2.3cm (0.9-inch) Black-and-White LCD Panel
1
E98776B94-PS
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.
For the availability of this product, please contact the sales office.
2
LCX026BLT
Block Diagram
1
18
H Shift Register (Bidirectional Scanning)
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4
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1
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N
B
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B
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K
H
C
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2
H
C
K
1
H
S
T
P
S
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14
15
17
9
20
19
21
22
12
11
10
8
23
16
7
6
4
3
5
2
24
Black Frame Control Circuit
B
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F
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13
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2
M
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3
Input Signal
Level Shifter
Circuit
3
LCX026BLT
Absolute Maximum Ratings (V
SS
= 0V)
H driver supply voltage
HV
DD
1.0 to +20
V
V driver supply voltage
VV
DD
1.0 to +20
V
Common pad voltage
COM
1.0 to +17
V
H shift register input pin voltage HST, HCK1, HCK2,
1.0 to +17
V
RGT
V shift register input pin voltage
VST, VCK, PCG,
1.0 to +17
V
BLK, ENB, DWN
MODE1, MODE2, MODE3
Video signal input pin voltage
SIG1, SIG2, SIG3, SIG4,
1.0 to +15
V
SIG5, SIG6, PSIG
Operating temperature
Topr
10 to +70
C
Storage temperature
Tstg
30 to +85
C
Panel temperature inside the antidust glass
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
PSIG
SIG4
SIG3
SIG5
SIG2
SIG6
SIG1
HV
DD
RGT
MODE3
MODE2
MODE1
13
14
15
16
17
18
19
20
21
22
23
24
HST
HCK1
HCK2
Vss
BLK
ENB
VCK
VST
PCG
DWN
VV
DD
COM
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
Symbol
Description
Pin
No.
Symbol
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
4
LCX026BLT
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 1M
(typ.). The equivalent circuit of each input pin is shown below: (Resistance value: typ.)
(1) SIG1, SIG2, SIG3, SIG4, SIG5, SIG6, PSIG
Input
HV
DD
Signal line
1M
(2) HCK1, HCK2
HV
DD
250
250
250
250
Level conversion circuit
(2-phase input)
Input
1M
1M
(3) RGT
Level conversion circuit
(single-phase input)
2.5k
2.5k
HV
DD
Input
1M
(4) HST
Level conversion circuit
(single-phase input)
250
250
HV
DD
Input
1M
5
LCX026BLT
(5) PCG, VCK
Level conversion circuit
(single-phase input)
250
250
VV
DD
Input
1M
(6) VST, BLK, ENB, MODE1, MODE2, MODE3
Level conversion circuit
(single-phase input)
2.5k
2.5k
VV
DD
Input
1M
(7) DWN
Level conversion circuit
(single-phase input)
2.5k
2.5k
VV
DD
Input
100k
(8) COM
Input
LC
1M
VV
DD
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