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| 4.7 inch colour 640 x 480 VGA | |
 This Product Is No Longer In Production. This information is given for reference only. |
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A full datasheet is available as a PDF file: 
Data Sheet
Display Composition
| Model Number | K6481L-FF |
| Type | Colour STN ( Super-Twist Nematic ) transmissive type negative display |
| Pixel format | 640 x 3 ( RGB ) x 480 individually addressable dots as a graphic matrix |
| Driving method | 1/240 duty multiplex drive, dual scan |
| Backlight | Single tube, edge-lit, cold cathode fluorescent tube with light guide |
| Surface texture | Non-glare polariser coating |
Overview
The K6481L-FF passive colour STN display features dual scan display addressing by virtue of Citizen's use of "Chip-On-Glass" ( C.O.G. ) technology. This provides the following advantages:-
• Dual scanning: effectively doubles the usual refresh rate of passive colour displays
• High contrast image giving a high colour depth
• Clearer, brighter colours with excellent picture definition
• Fast response time and more colour shades
• Compact, lightweight and robust
Together with the combination of C.O.G. technology, the fast fluid liquid crystal and low resistivity I.T.O. ( Indium-Tin Oxide ) electrodes ensure that the image on the display is high quality and high contrast making it extremely clear and easy to read. Mouse pointers do not become "lost" and multiplex smear is dramatically reduced.
Optical Characteristics at 25°C
| Item |
Symbol |
Typical |
Unit |
Condition |
| Turn on time |
TON |
170 |
ms |
q=0·, f=0· |
| Turn off time |
TOFF |
100 |
ms |
q=0·, f=0· |
| Contrast ratio |
CR |
25 |
- |
q=0·, f=0· |
| Visual range ("up & down") |
q1 |
-35<q1<+20 |
degrees |
q=0·, CR > 5 |
| Visual range ("left & right") |
q2 |
-40<q2<+50 |
degrees |
f=90·, CR > 5 |
Electrical Characteristics
| Item |
Symbol |
Minimum |
Typical |
Maximum |
Unit |
| Supply voltage for logic circuits |
VDD - VSS |
4.5 |
5.0 |
5.5 |
V |
| Supply voltage for LC panel drive |
VAA - VSS |
- |
23.5 |
28.0 |
V |
| Frame frequency |
FFRAME |
- |
120.0 |
- |
Hz |
| Current consumption |
IDD |
- |
52.0 |
- |
mA |
| IAA |
- |
6.0 |
- |
mA |
Temperature Range
| Item |
Minimum |
Maximum |
Unit |
| Storage temperature |
- 25 |
+ 60 |
·C |
| Operating temperature |
0 |
+ 45 |
·C |
Mechanical Specifications
Weight: 0.114Kg ( 0.251 lbs )
Terminal Connections
| Pin | Description | Pin | Description | Pin | Description |
| 1 | VSS | 11 | UD4 | 21 | LD3 |
| 2 | VD3 | 12 | UD3 | 22 | LD2 |
| 3 | VAA | 13 | UD2 | 23 | LD1 |
| 4 | VDD | 14 | UD1 | 24 | LD0 |
| 5 | -Disp Off | 15 | UD0 | 25 | VSS |
| 6 | (nc) | 16 | VSS | 26 | Frame |
| 7 | VSS | 17 | LD7 | 27 | Load |
| 8 | UD7 | 18 | LD6 | 28 | VSS |
| 9 | UD6 | 19 | LD5 | 29 | Clock |
| 10 | UD5 | 20 | LD4 | 30 | VSS |
Connection Details
Displays should be connected by means of the 30-way data connector and the outside two pins of the 3-way backlight connector ( type number JST: BHR-03VS-1 ). The backlight lead lengths are approximately 20mm long.
The data cable connection for the display is a flat-film cable ( FFC ). The cable used is an FFC type cable owith 30-ways and 0.5mm pitch. Due to the high density of the connections for this display and the limited physical space on the unit, there is no version with "moulded" connectors or "wire-type" connectors.