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Ordering number : ENN6758
LCD Module
ALP228CXX
Low-Temperature Polysilicon
1.8-inch TFT LCD Module
Overview
This 1.8 inch low temperature poly- silicon TFT-LCD module is suitable for digital still camera.
Features
• Diagonal 4.6cm (1.8inch) display size.
• 521 × 218 = 113,578 dots.
• RGB delta color arrangement.
• Operating temperature (Panel) is -10 to +60°C. Ambient temperature during storage is -20 to +70°C.
• Slim design, light weight and narrow frame. (t=0.7mm glass)
• Up / down and right / left inverse function.
• Built-in level shifter circuit.
• Conform to NTSC, PAL when using recommended IC : LV4127W, LV4135W, LV4137W,
(LV4139W : Under development)
• Anti-reflection (AR) coat.
• Panel power consumption is Typ.100mW at NTSC.
• Optical transmittance is approx. 8%.
Specifications
Dot count (H) × (V) 521 × 218 dot
Effective display dimensions (H) × (V) 36.77 × 27.47 mm
Display size (diagonal) 4.6 (1.8inch) cm
Dot pitch (H) × (V) 0.0705 × 0.126 mm
Color arrangement RGB Delta -
External Dimensions (W) × (H) × (D) TYP 43.4 × 36.6 × 2.1 mm Note1
Weight Approx. 10 g
*Note1: Excluding flexible cable and protrusions.
Item Specifications Unit Remarks
Ver.1.6
12898
13001 RM (IM) No.6758-1/8
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ALP228CXX
Absolute Maximum Ratings
Item Symbol Ratings Unit
H driver power supply voltage HVDD -1.0 to +17 V
V driver power supply voltage VVDD -1.0 to +17 V
Common electrode voltage VCOM -1.0 to +17 V
Driving direction signal voltage CSH, CSV -1.0 to +17 V
H driver input voltage STH, XSTH, CKH1, CKH2 -1.0 to +17 V
V driver / precharge data
input voltage
Video / precharge data
input voltage
Operating temperature (panel) Topr -10 to +60
Storage temperature Tstg -20 to +70
at VSS=0V
STV, XSTV, CKV1, CKV2,
ENB, XENB, PCG, XPCG
VG, VR, VB, VPCD -1.0 to +13 V
-1.0 to +17 V
C
°
C
°
Operating Conditions
Power supply voltage HVDD 15.0V ± 0.5V, VVDD 15.0V ± 0.5V, VSS 0V
Item Symbol MIN TYP MAX Unit
H driver input voltage
V driver input voltage
CSV, CSH
Video signal center voltage VVC 5.9 6.0 6.3 V
Video signal input voltage range *1 VG, VR, VB VVC-3.5 - VVC+3.5 V
Common electrode voltage*2 VCOM (VVC-0.2)-0.2 (VVC-0.2) (VVC-0.2)+0.2 V
Precharge data signal *1 VPCD VVC±1.5 VVC±2.0 VVC±2.5 V
Low VHIL -0.3 0.0 0.3 V
High VHIH 2.5 3.0 4.0 V
Low VVIL -0.3 0.0 0.3 V
High VVIH 2.5 3.0 4.0 V
Low VSIL -0.3 0.0 0.3 V
High VSIH 11.5 VDD VDD V
*1 Video signal and precharge data signal shall be input symmetrically around VVC.
*2 Set common electrode voltage to the optimum voltage.
Optical Specification s
Item Symbol Condition MIN TYP MAX Unit
Contrast ratio CR
θT 15
Viewing angle range
θB 35
θL 45
θR
25°C
CR >= 10 -
- 100 - -
- deg
45
No.6758-2/8
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ALP228CXX
Pin Function
Pin No Symbol Function
1 NC Leave this pin open
2 COM Common electrode voltage
3 CKV1 V clock 1
4 CKV2 V clock 2
5 VVDD VDD for V drive
6 STV V start signal
7 XSTV Inverted signal of STV
8 CSV Up / down inverse control signal (H : Normal scan, L : Reverse scan)
9 ENB Enable signal
10 XENB Inverted signal of ENB
11 PCD Precharge data signal
12 B Video signal (B)
13 R Video signal (R)
14 G Video signal (G)
15 VSS VSS for V and H drive
16 XPCG Inverted signal of PCG
17 PCG Precharge gate signal
18 CSH Right / left inverse control signal (H : Normal scan, L : Reverse scan)
19 XSTH Inverted signal of STH
20 STH H start signal
21 CKH2 H clock 2
22 CKH1 H clock 1
23 HVDD VDD for H drive
24 NC Leave this pin open
No.6758-3/8
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Block Diagram
VSS
ALP228CXX
Front View
Normal Scan
Reverse Scan
STH
CKH1
VSS
G
R
B
H-DRIVER
......
CKH2
HVDD
CSH
VSS
COM
VVDD
CKV1
CKV2
V-DRIVER
ENB
CSV
STV
Normal Scan
Reverse Scan
VVDD
PCD
1.NC
2.COM
...
...
...
4.CKV2
3.CKV1
6.STV
5.VVDD
PRECHARGE CIRCUIT
15.VSS
14.G
13.R
12.B
11.PCD
10.XENB
9.ENB
8.CSV
7.XSTV
16.XPCG
17.PCG
18.CSH
L/SL/SL/SL/SL/S
19.XSTH
...
...
...
20.STH
L/S
21.CKH2
22.CKH1
PCG
XPCG
23.HVDD
24.NC
No.6758-4/8
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System Configuration
ALP228CXX
Video signal
Composite
Y/C
Y/Color
differen ce
Se ria l con tro l
Video signal
Composite
Y/C
Y/Color
differen ce
X'tal
processing
BUS
Sync.
sep.
X'tal
processing
LV4127W
Signal processing IC
Video
chroma
signal
I/F
R
G
drivers
B
(S&H)
Timing
controlle r
VCO
LV4137W
Signal processing IC
Video
chroma
signal
R
G
drivers
B
(S&H)
RGB
RGB
R
G
B
PCD
PCD
Low-temperature p-Si
TFT-LCD
Horizontal scanner
Display area
Vertical scanner
Level
shifter
Precharge circuit
ALP228
Low-temperature p-Si
TFT-LCD
R
G
B
Horizontal scanner
Se ria l con tro l
BUS
I/F
Sync.
sep.
Timing
controlle r
VCO
Vertical scanner
Level
shifter
Display area
Precharge circuit
ALP228
No.6758-5/8
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System Configuration
ALP228CXX
Video signal
Analog RGB
Se ria l con tro l
Synchronus
s ig n a l
Video signal
Composite
Y/C
Y/Color
differen ce
LV4135W
Signal processing IC
R
G
B
BUS
I/F
Sync.
sep.
Timing
controlle r
VCO
LV4139W
X'tal
Signal processing IC
**Under development
Video
chroma
signal
processing
R
G
B
RGB
drivers
(S&H)
RGB
drivers
(S&H)
R
G
B
PCD
R
G
B
PCD
Low-temperature p-Si
TFT-LCD
Horizontal scanner
Display area
Vertical scanner
Level
shifter
Precharge circuit
ALP228
Low-temperature p-Si
TFT-LCD
Horizontal scanner
Se ria l con tro l
BUS
I/F
Sync.
sep.
Timing
controlle r
VCO
Vertical scanner
Level
shifter
Display area
Precharge circuit
ALP228
No.6758-6/8
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Package Dimension
ALP228CXX
No.6758-7/8
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ALP228CXX
No.6758-8/8
PS
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