Page 1
Ordering number : ENN6769
LCD Module
ALP237FXX
Low-Temperature Polysilicon
1.8-inch TFT LCD Module
Overview
This wide viewing type 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.
• Wide viewing angle,
• 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 : LV4131W, LV4133W, (LV4139W : Under development).
• Anti-reflection (AR) coat.
• Panel power consumption is Typ.100mW at NTSC.
• Optical transmittance is approx. 6.3%.
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. 6 g
*Note1: Excluding flexible cable and protrusions.
Survival
Item Specifications Unit Remarks
®
. (Super Ranged Viewing by Vertical Alignment)
Ver.1.6
12898
13001 RM (IM) No.6769-1/8
Page 2
ALP237FXX
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 15.5V ± 0.5V, VVDD 15.5V ± 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 6.3 6.5 6.8 V
Video signal input voltage range *1 VG, VR, VB VVC-5.0 - VVC+5.0 V
Common electrode voltage*2 VCOM (VVC-0.3)-0.2 (VVC-0.3) (VVC-0.3)+0.2 V
Precharge data signal *1 VPCD VVC±4.5 - VVC±5.0 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 55
Viewing angle range
θB 55
θL 45
θR
25°C
CR >= 10 -
- 150 - -
- deg
45
No.6769-2/8
Page 3
ALP237FXX
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.6769-3/8
Page 4
Block Diagram
VSS
ALP237FXX
Front View
Normal Scan
Reverse Scan
STH
CKH1
VSS
G
R
B
H-DRIVER
......
CKH2
HVDD
CSH
VSS
COM
VVDD
CKV1
CKV2
V-DRIVER
CSV
STV
Normal Scan
Reverse Scan
VVDD
ENB
PCD
1.NC
2.COM
...
...
...
4.CKV2
3.CKV1
6.STV
5.VVDD
PRECHARGE CIRCUIT
14.G
13.R
12.B
11.PCD
10.XENB
9.ENB
8.CSV
7.XSTV
16.XPCG
15.VSS
17.PCG
18.CSH
19.XSTH
...
...
...
PCG
XPCG
L/S
L/SL/SL/SL/SL/S
24.NC
23.HVDD
22.CKH1
21.CKH2
20.STH
No.6769-4/8
Page 5
System Configuration
ALP237FXX
Video signal
Composite
Y/C
Y/Color
differen c e
Se ria l con tro l
Video signal
Analog RGB
X'tal
processing
BUS
Sync.
sep.
Signal processing IC
Video
chroma
signal
I/F
LV4131W
R
G
B
Timing
controlle r
LV4133W
Signal processing IC
R
G
B
drivers
(S&H)
VCO
drivers
(S&H)
RGB
RGB
R
G
B
PCD
R
G
B
PCD
Low-temperature p-Si
TFT-LCD
Horizontal scanner
Display area
Vertical scanner
Level
shifter
Precharge circuit
ALP237
Low-temperature p-Si
TFT-LCD
Horizontal scanner
Se ria l con tro l
Synchronus
s ig n a l
BUS
I/F
Sync.
sep.
Timing
controlle r
VCO
Vertical scanner
Level
shifter
Display area
Precharge circuit
ALP237
No.6769-5/8
Page 6
System Configuration
X'tal
Video signal
Composite
Y/C
Y/Color
differen ce
Se ria l con tro l
LV4139W
Signal processing IC
**Under development
Video
chroma
signal
processing
BUS
I/F
Sync.
sep.
R
G
B
Timing
controlle r
ALP237FXX
RGB
drivers
(S&H)
R
G
B
PCD
Low-temperature p-Si
TFT-LCD
Horizontal scanner
Display area
Vertical scanner
Level
shifter
Precharge circuit
VCO
ALP237
No.6769-6/8
Page 7
Package Dimension
ALP237FXX
No.6769-7/8
Page 8
ALP237FXX
No.6769-8/8
PS
Loading...