Datasheet LCX034ALT Datasheet (Sony)

Page 1
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∗1structure 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∗2data 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.
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E99665A04
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.
LCX034ALT
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LCX034ALT
Block Diagram
1
18
H Shift Register (Bidirectional Scanning)
Up/Down and/or Right/Left
Inversion Control Circuit
V Shift Register
(Bidirectional Scanning)
Precharge Control
Circuit
COM PAD
V Shift Register
(Bidirectional Scanning)
COM
SIG6
SIG5
SIG4
SIG3
SIG2
SIG1
Vss
VV
DD
HV
DD
MODE1
ENB
DWN
PCG
VCK
VST
RGT
BLK
HCK2
HCK1
HST
PSIG
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
Black Frame Control Circuit
13
Black Frame Control Circuit
MODE2
MODE3
Input Signal Level Shifter Circuit
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LCX034ALT
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
PSIG
SIG4
SIG3
SIG5
SIG2
SIG6
SIG1
HVDD
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
VVDD
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
Absolute Maximum Ratings (VSS = 0V)
H driver supply voltage HVDD –1.0 to +20 V
V driver supply voltage VVDD –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 (VSS = 0V)
Supply voltage
HVDD 15.5 ± 0.5V VVDD 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
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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 VSS 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
HVDD
250
250
250
250
Level conversion circuit
(2-phase input)
Input
1M
1M
(3) RGT, MODE1, MODE2, MODE3
Level conversion circuit
(single-phase input)
2.5k2.5k
HVDD
Input
1M
(4) HST
Level conversion circuit
(single-phase input)
250250
HV
DD
Input
1M
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LCX034ALT
(5) PCG, VCK
Level conversion circuit
(single-phase input)
250250
VV
DD
Input
1M
(6) VST, BLK, ENB, DWN
Level conversion circuit
(single-phase input)
2.5k2.5k
VV
DD
Input
1M
(7) COM
Input
LC
1M
VVDD
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LCX034ALT
Input Signals
1. Input signal voltage conditions (VSS = 0V)
Item
H shift register input voltage HST, HCK1, HCK2, RGT
(Low) (High)
(Low)
(High)
VHIL VHIH
VVIL
VVIH VVC
Vsig Vcom VpsigB VpsigG
–0.5
4.5
–0.5
4.5
6.8 VVC – 4.5 VVC – 0.6 VVC ± 4.4 VVC ± 1.8
0.0
5.0
0.0
5.0
7.0
7.0 VVC – 0.5 VVC ± 4.5 VVC ± 1.9
0.4
5.5
0.4
5.5
7.2 VVC + 4.5 VVC – 0.4 VVC ± 4.6 VVC ± 2.0
V V
V
V V
V V
V
V shift register input voltage MODE1, MODE2, MODE3, BLK, VST, VCK, PCG, ENB, DWN
Video signal center voltage Video signal input range
1
Common voltage of panel
2
Uniformity improvement signal input voltage (PSIG)
3
Symbol Min. Typ. Max. Unit
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 VSIG6 and which is symmetrical to VVC. PSIG wave form is 2 steps like below, in the upper chart, lower shows signal level of the 1st step, upper shows signal level of the 2nd step. Also, the rising and falling of PSIG are synchronized with the rising of PRG 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.
4
PRG shows the time of the 1st step of PSIG signal, and it is not input to the panel.
Level Conversion Circuit
The LCX034ALT 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.
90%
10%
PsigB
PsigG
trPSIG, tfPSIG
PSIG
PCG
PRG
4
VVC
Input waveform of uniformity improvement signal PSIG
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LCX034ALT
2. Clock timing conditions (Ta = 25°C) (SVGA mode: fHCKn = 4.0MHz, fVCK = 24.0kHz)
5
Hckn means Hck1 and Hck2.
6
Blk is set to positive polarity pulse for other than SVGA mode ; Low level for SVGA mode.
Hst rise time Hst fall time Hst data set-up time Hst data hold time Hckn rise time
5
Hckn fall time
5
Hck1 fall to Hck2 rise time Hck1 rise to Hck2 fall time Vst rise time Vst fall time Vst data set-up time Vst data hold time Vck rise time Vck fall time Enb rise time Enb fall time Vck rise/fall to Enb rise time Horizontal video period completed to Enb fall time Enb fall to Pcg rise time Pcg rise time Pcg fall time Pcg rise to Prg rise time Pcg rise to Prg rise time Prg rise to Pcg fall time Pcg fall to horizontal video period start time Pcg pulse width Prg rise to Vck rise/fall time Blk rise time Blk fall time Blk fall to Vst rise time
trHst tfHst tdHst thHst trHckn tfHckn to1Hck to2Hck trVst tfVst tdVst
thVst trVck tfVck trEnb tfEnb toEnb tdEnb toPcg trPcg tfPcg toPrgr toPrgf toPcg toVideo twPcg toVck trBlk tfBlk toVst
— — 50 50 —
— –15 –15
5
5 — — — —
300 900 630
— —
300 200
1050
300
1350
0 — — 32
— — 60 60 — —
0
0 — — 10 10 — — — —
500
1000
700
— —
500 250
1100
350 1600 1000
— — —
30 30 70 70 30 30 15
15 100 100
15
15 100 100 100 100
30
30
— 100 100
ns
µs
ns
Item Symbol Min. Typ. Max. Unit
HST
HCK
VST
VCK
ENB
PCG
PRG
BLK
6
µs
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LCX034ALT
7
Definitions: The right-pointing arrow ( ) means +. The left-pointing arrow ( ) means –. The black dot at an arrow ( ) indicates the start of measurement.
<Horizontal Shift Register Driving Waveform>
Hst rise time
HST
HCK
Hst fall time
Hst data set-up time
Hst data hold time
Hckn rise time
3
Hckn fall time
3
Hck1 fall to Hck2 rise time
Hck1 rise to Hck2 fall time
Hckn
5
duty cycle 50% to1Hck = 0ns to2Hck = 0ns
Hckn
5
duty cycle 50% to1Hck = 0ns to2Hck = 0ns
Hckn
5
duty cycle 50% to1Hck = 0ns to2Hck = 0ns
trHst
tfHst
tdHst
thHst
trHckn
tfHckn
to1Hck
to2Hck
Item Symbol Waveform Conditions
90%
10%
10%
90%
Hst
trHst tfHst
50%
50%
7
Hst
Hck1
tdHst thHst
50%
50%
5
Hckn
10%
10%
90%
90%
trHckn tfHckn
50%
50%
7
Hck1
to2Hck to1Hck
50%
50%
Hck2
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LCX034ALT
<Vertical Shift Register Driving Waveform>
VCK
ENB
Vck rise time
Vck fall time
Enb rise time
Enb fall time
trVck
tfVck
trEnb
tfEnb
Vck rise/fall to Enb rise time
toEnb
Horizontal video period completed to Enb fall time
tdEnb
Enb fall to Pcg rise time toPcg
Item Symbol Waveform Conditions
Vck
10%
10%
90%
90%
trVckn tfVckn
Vst rise time
VST
Vst fall time
Vst data set-up time
Vst data hold time
trVst
tfVst
tdVst
thVst
90%
10%
10%
90%
Vst
trVst tfVst
50%
50%
7
Vst
Vck
tdVst thVst
50%
50%
90%
10%
10%
90%
Enb
tfEnb trEnb
50%
50%
toEnb
Vck
H. blanking periodH. video period
tdEnb
toPcg
50% 50%
Enb
Pcg
7
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LCX034ALT
tfBlk
toVst
BLK
Blk rise time
Blk fall time
Blk fall to Vst rise time
trBlk
Blk
50%
50%
toVst
Vst
7
50%
8
Input the pulse obtained by taking the OR of the above pulse (PCG) and BLK to the PCG input pin.
Item Symbol Waveform Conditions
Pcg rise time
PCG
8
PRG
trPcg
Pcg fall time tfPcg
Pcg rise to Prg rise time
toPrgr
Pcg fall to Prg fall time
toPrgf
Prg rise to Pcg fall time
toPcg
Pcg fall to horizontal video period start time
toVideo
Pcg pulse width
twPcg
Prg rise to Vck rise/fall time
toVck
90%
10%
10%
90%
Pcg
tfEnb trEnb
50%
H. video period startH. blanking period
toPcg
toVideo
50%
Pcg
50%
toPrgr
toPrgf
50%
Prg
twPcg
7
50%
50%
toVck
Prg
Vck
7
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LCX034ALT
Electrical Characteristics (Ta = 25°C, HVDD = 15.5V, VVDD = 15.5V)
1. Horizontal drivers
Item
Input pin capacitance HCKn
HST
Input pin current HCK1
HCK2 HST
RGT Video signal input pin capacitance Current consumption
CHckn CHst
Csig IH
HCK1 = GND HCK2 = GND HST = GND RGT = GND
HCKn: HCK1, HCK2 (4.0MHz)
— —
–500
–1000
–500 –150
— —
7
7 –250 –300 –150
–30 130
10.0
12 12 — — — —
200
15.0
pF pF µA µA µA µA pF
mA
Symbol Min. Typ. Max. Unit Condition
2. Vertical drivers
Item
Input pin capacitance VCK
VST
Input pin current VCK PCG, VST, ENB, DWN, BLK, MODE1,
MODE2, MODE3 Current consumption
CVck CVst
IV
— —
–1000
–150
7
7 –150
–30
3.0
12 12 —
6.0
pF pF µA
µA
mA
Symbol Min. Typ. Max. Unit Condition
3. Total power consumption of the panel
Item
Total power consumption of the panel
PWR 200 300 mW
Symbol Min. Typ. Max. Unit
4. Pin input resistance
Item
Pin – VSS input resistance Rpin 0.4 1 M
Symbol Min. Typ. Max. Unit
VCK = GND PCG, VST, ENB, DWN,
BLK, MODE1, MODE2, MODE3 = GND
VCK: (24.0kHz)
5. Uniformity improvement signal
Item
Input pin capacitance for uniformity improvement signal
CPSIGo 8 nF
Symbol Min. Typ. Max. Unit
12
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LCX034ALT
Reflection Preventive Processing
When a retardation film which rotates the polarization axis is used to adjust to the polarization direction of a polarization screen or prism, use a retardation film with reflection preventive processing on the surface. This prevents characteristic deterioration caused by luminous reflection.
Electro-optical Characteristics (SVGA mode)
Item
Contrast ratio
25°C 25°C
25°C
60°C
25°C
60°C
25°C
60°C
0°C
25°C
0°C 25°C 60°C 25°C 25°C
CR T RV90-25 GV90-25 BV90-25 RV90-60 GV90-60 BV90-60 RV50-25 GV50-25 BV50-25 RV50-60 GV50-60 BV50-60 RV10-25 GV10-25 BV10-25 RV10-60 GV10-60 BV10-60 ton0 ton25 toff0 toff25 F YT60 CTK
120
11
1.0
1.1
1.2
1.0
1.0
1.1
1.4
1.5
1.6
1.4
1.4
1.5
1.9
2.0
2.1
1.9
1.9
1.9 — — — — — — —
150
13
1.3
1.5
1.6
1.3
1.4
1.5
1.7
1.8
1.9
1.6
1.7
1.8
2.2
2.3
2.4
2.1
2.2
2.3 30 12
100
30
–65
— —
— —
1.7
1.9
2.0
1.6
1.7
1.9
2.0
2.1
2.2
1.9
2.0
2.1
2.5
2.6
2.7
2.4
2.5
2.6 80 40
200
70
–40
0 5
1 2
3
4
5 6 7
%
V
ms
dB
s
%
Optical transmittance
V-T characteristics
V90
V50
ON time
OFF time
V10
Response time
Flicker Image retention time Cross talk
Symbol Measurement method Min. Typ. Max. Unit
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LCX034ALT
<Electro-optical Characteristics Measurement>
Measurement system I
Measurement system II
Luminance
Meter
Measurement
Equipment
Light Detector
Measurement
Equipment
Screen: Made by Sony (VPS-120FH: Gain 2.8, Glass Beaded Type) or equivalent Projection lens: Focal distance 80mm, F1.9 Light source: 155W metal Haloid arc lamp (Color temperature 7500K ± 500) (× 24, Sensor area: 7mmφ) Polarizer: Side of incidence – Nitto Denko’s EG-1224DU or Polatechno’s SKN-1824ZT or equivalent
Side of output light – Polatechno's SHC-128 or equivalent
Optical fiber
LCD panel
Light receptor lens
Drive Circuit
Light
Source
Basic measurement conditions (1) Driving voltage HVDD = 15.5V, VVDD = 15.5V VVC = 7.0V, Vcom = 6.5V (2) Measurement temperature 25°C unless otherwise specified. (3) Measurement point One point in the center of the screen unless otherwise specified. (4) Measurement systems Two types of measurement systems are used as shown below. (5) Video input signal voltage (Vsig) Vsig = 7.0 ± VAC [V] (VAC = signal amplitude)
Screen
LCD Projector
Approx. 2000mm
1. Contrast Ratio
Contrast Ratio (CR) is given by the following formula (1).
L (White)
CR = ... (1)
L (Black)
L (White): Surface luminance of the center of the screen at the input signal amplitude VAC = 0.5V. L (Black): Surface luminance of the center of the screen at VAC = 4.5V. Both luminosities are measured by System I.
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LCX034ALT
2. Optical Transmittance
Optical Transmittance (T) is given by the following formula (2).
White luminance
T = × 100 [%] ... (2)
Luminance of light source
"White luminance" means the maximum luminance on the screen at the input signal amplitude VAC = 0.5V on Measurement System I.
3. V-T Characteristics
V-T characteristics, or the relationship between signal amplitude and the transmittance of the panels, are measured by System II by inputting the same signal amplitude VAC to each input pin. V90, V50, and V10 correspond to the voltages which define 90%, 50%, and 10% of transmittance respectively.
4. Response Time
Response time ton and toff are defined by formulas (5) and (6) respectively.
ton = t1 – tON ...(5) toff = t2 – tOFF ...(6)
t1: time which gives 10% transmittance of
the panel.
t2: time which gives 90% transmittance of
the panel. The relationships between t1, t2, tON and tOFF are shown in the right figure.
90
50
10
V
90 V50 V10
VAC – Signal amplitude [V]
Transmittance [%]
Input signal voltage (Waveform applied to the measured pixels)
4.5V
0.5V
7.0V
0V
Optical transmittance output waveform
100%
90%
10%
0%
tON t1
ton
tOFF t2
toff
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LCX034ALT
5. Flicker
Flicker (F) is given by formula (7). DC and AC (SVGA/VGA/PC98/NTSC: 30Hz, rms, PAL: 25Hz, rms) components of the panel output signal for gray raster∗mode are measured by a DC voltmeter and a spectrum analyzer in System II.
F [dB] = 20log
{
AC component
}
...(7)
DC component
6. Image Retention Time
Apply the monoscope signal to the LCD panel for 60 minutes and then change this signal to the gray scale
of Vsig = 7.0 ± VAC (VAC: 3 to 4V). Judging by sight at the VAC that holds the maximum image retention, measure the time till the residual image becomes indistinct.
Monoscope signal conditions: Vsig = 7.0 ± 4.5 or ±2.0 [V] (shown in the right figure) Vcom = 6.6V
7. Cross Talk
Cross talk is determined by the luminance differences between adjacent areas represented by Wi' and
Wi (i = 1 to 4) around a black window (Vsig = 4.5 V/1V).
Cross talk value CTK = × 100 [%]
Each input signal voltage for gray raster mode is given by Vsig = 7.0 ± V50 [V] where: V50 is the signal amplitude which gives 50% of transmittance in V-T characteristics.
Black level
White level
Vsig waveform
7.0V
0V
4.5V
2.0V
4.5V
2.0V
W1
W1
'
W3
W3
'
W2 W2
' W4'
W4
Wi' – Wi
Wi
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LCX034ALT
Viewing angle characteristics (Reference Value)
90
270
180
0
Theta
Phi
30 70
θ
φ
φ180°
X
φ270°
Y
φ
φ90°
Z
θ
Measurement method
5010
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LCX034ALT
Optical transmittance of LCD panel (Reference Value)
20
10
0
400 500 600 700
Wavelength [nm]
Trans. [%]
Measurement method: Measurement system ΙΙ
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LCX034ALT
1. Dot Arrangement
The dots are arranged in a stripe. The shaded area is used for the dark border around the display.
612 dots
4 dots
604 dots (Effective 10.87mm)
Active area
Photo-Shielding
Gate SW Gate SW Gate SW
6 dots
816 dots
6 dots
4 dots
804 dots (Effective 14.47mm)
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LCX034ALT
2. LCD Panel Operations
[Description of basic operations]
A vertical driver, which consists of vertical shift registers, enable-gates and buffers, applies a selected pulse
to every 604 gate lines sequentially in a single horizontal scanning period. (in SVGA mode)
A horizontal driver, which consists of horizontal shift registers, gates and CMOS sample-and-hold circuits, applies selected pulses to every 804 signal electrodes sequentially in a single horizontal scanning period. These pulses are used to supply the sampled video signal to the row signal lines.
Vertical and horizontal shift registers address one pixel, and then Thin Film Transistors (TFTs; two TFTs) turn on to apply a video signal to the dot. The same procedures lead to the entire 604 × 804 dots to display a picture in a single vertical scanning period.
The data and video signals shall be input with the 1H-inverted system.
[Description of operating mode]
This LCD panel can change the active area by displaying a black frame to support various computer or video signals. The active area is switched by MODE1, 2 and 3. However, the center of the screen is not changed. The active area setting modes are shown below.
MODE1 MODE2 MODE3 Display mode
L
H
H
L
H
L
H
L
SVGA
804 × 604
PAL
762 × 572
VGA/NTSC
644 × 484
PC98
644 × 404
L
L
L
H
This LCD panel has the following functions to easily apply to various uses, as well as various broadcasting systems.
Right/left inverse mode
Up/down inverse mode
These modes are controlled by two signals (RGT and DWN). The right/left and/or up/down setting modes are shown below.
Right/left and/or up/down mean the direction when the Pin 1 marking is located at the right side with the pin block upside.
To locate the active area in the center of the panel in each mode, polarity of the start pulse and clock phase for both the H and V systems nust be varied. The phase relationship between the start pulse and the clock for each mode is shown on the following pages.
RGT
Mode Right scan Left scan
H
L
DWN Mode
Down scan Up scan
H
L
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LCX034ALT
VST (DWN = H)
VST (DWN = L)
(1.2) PAL
VD
1
2
VCK
569 570 571 572
VST (DWN = H)
VST (DWN = L)
(1.1) SVGA
VD
1 2
VCK
601 602 603 604
VD
1 2
VCK
482 483 484
(1.3) VGA/NTSC
VD
1 2
VCK
401 402 403 404
(1.4) PC98
VST (DWN = H)
VST (DWN = L)
VST (DWN = H)
VST (DWN = L)
481
Vertical display cycle 572H
Vertical display cycle 604H
Vertical display cycle 484H
Vertical display cycle 404H
(1) Vertical direction display cycle
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LCX034ALT
(2.1.1) SVGA, RGT = H
Horizontal display cycle
HST
HCK1
1 2 3 4 131 132 133 134
HCK2
HD
(2.1.2) SVGA, RGT = L
Horizontal display cycle
HST
HCK1
HCK2
HD
1
2
3 4 131
132 133
134
1 2 3 4
Horizontal display cycle
HST
HCK1
125 126 127 128
(2.2.1) PAL, RGT = H
HCK2
Horizontal display cycle
HST
HCK1
1 2 3 4 125 126 127 128
(2.2.2) PAL, RGT = L
HCK2
HD
HD
(2) Horizontal direction display cycle
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LCX034ALT
Horizontal display cycle
HST
HCK1
105 106 107 108
(2.3.1) VGA/NTSC/PC98, RGT = H
HCK2
Horizontal display cycle
HST
HCK1
1 2 3 4
105 106
107 108
(2.3.2) VGA/NTSC/PC98, RGT = L
HCK2
HD
HD
1 2 3 4
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LCX034ALT
3. 6-dot Simultaneous Sampling
The horizontal shift register samples signals SIG1 to SIG6 simultaneously. This requires phase matching between signals SIG1 to SIG6 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 SIG1 to SIG6 are exactly reversed.
S/H
CK1
CK2
SIG3
SIG6
SIG1
LCX034ALT
SIG3
SIG6
SIG1
SIG2
SIG2
SIG4
SIG4
SIG5
SIG5
CK3
CK4
CK5
S/H
S/H
S/H
S/H
S/H
CK6
S/H
S/H
S/H
S/H
S/H
5
3
2
4
6
7
HCKn
CK1
CK3
CK5
CK2
CK4
CK6
<Phase relationship of delaying sample-and-hold pulses> (right scan)
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LCX034ALT
Display System Block Diagram
An example of display system is shown below.
R-IN
G-IN
B-IN
Vsync Hsync
CLP, PRG
MCK1
FRP, S/H Control
6
HST, HCK, VST, VCK, PCG, ENB
Pre Driver CXA2111R
Timing Generator CXD3500R
PLL CXA3106Q
S/H Driver CXA2112R
S/H Driver CXA2112R
S/H Driver CXA2112R
LCX034
R
LCX034
G
LCX034
B
6
6
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LCX034ALT
Notes on Handling
(1) Static charge prevention
Be sure to take the following protective measures. TFT-LCD panels are easily damaged by static charges. a) Use non-chargeable gloves, or simply use bare hands. b) Use an earth-band when handling. c) Do not touch any electrodes of a panel. d) Wear non-chargeable clothes and conductive shoes. e) Install conductive mats on the working floor and working table. f) Keep panels away from any charged materials. g) Use ionized air to discharge the panels.
(2) Protection from dust and dirt
a) Operate in a clean environment. b) When delivered, the panel surface (glass panel) is covered by a protective sheet. Peel off the protective
sheet carefully so as not to damage the glass panel.
c) Do not touch the glass panel surface. The surface is easily scratched. When cleaning, use a clean-
room wiper with isopropyl alcohol. Be careful not to leave a stain on the surface.
d) Use ionized air to blow dust off the glass panel.
(3) Light resistance
Orientation film and organic matter such as liquid crystal used inside of the LCD panel deteriorate by the light chemical reaction. As a result, its indication characteristic may irreversible change. The progress of its chemical reaction is influenced by short wavelength side's light (characteristics of UV cut filter) and temperature when quantitiy of light is constant. To control its progress, attach suitable UV cut filter between light source and LCD panel. (Sharp characteristic's filter of λ > 425nm is recommended.) Also, use suitable IR cut filter to lower the temperature of LCD panel and cool the panel carefully.
(4) Other handling precautions
a) Do not twist or bend the flexible PC board especially at the connecting region because the board is
easily deformed. b) Do not drop the panel. c) Do not twist or bend the panel or panel frame. d) Keep the panel away from heat sources. e) Do not dampen the panel with water or other solvents. f) Avoid storing or using the panel at a high temperature or high humidity, which may result in panel
damages. g) Minimum radius of bending curvature for a flexible substrate must be 1mm. h) Torque required to tighten screws on a panel must be 0.098N · m (measurement screw : JCIS Type 1,
M1.7 flat head screw) or less. i) Do not pressure the portion other than mounting hole (cover).
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LCX034ALT
Package Outline Unit: mm
Active Area
1
2
3
4
5
7
8
9
Output light Polarizing Axis
25.0 ± 0.15
(14.47)
(10.87)
12.0 ± 0.15
(75.5)
101.5 ± 1.4
23.0 ± 0.1
26.0 ± 0.15
8-R1.0
12.5 ± 0.05
4.9 ± 0.2
Thickness of the connector
0.3 ± 0.05
2.2 ± 0.1
1.5 ± 0.1
12.5 ± 0.15
2.0 ± 0.1
21.0 ± 0.1
Incident
light
5-φ1.8 ± 0.05
electrode (enlarged)
PIN24
PIN1
P 0.5 ± 0.02 × 23 = 11.5 ± 0.03
0.5 ± 0.1
0.5 ± 0.15
4.0 ± 0.4
0.35 ± 0.03
The rotation angle of the active area relative to H and V is ± 1°.
Incident light Polarizing Axis
6
weight 5.6g
Description
Molding material
Outside frame
Reinforcing board
Reinforcing material
F P C
No
1 2 3 4 5 6
Cover 1
7 8
Cover 2
9
Glass 1 Glass 2
Sony Corporation
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