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| 8.4 inch colour 640 x 480 VGA | |
 This Product Is No Longer In Production. This information is given for reference only. |
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Display Composition
| Model Number | K6484L-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 K-series range of passive colour STN displays feature dual scan display addressing which doubles the refresh rate of single scan panels. In the K6484L display, the use of "Slim-TAB" technology connects the control lines to the display in the most compact and efficient manner. 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.
The display also includes a DC-DC converter that creates the main drive voltage for the LCD panel. Creating the "unusual" -28 volts for an LCD is often the designer-engineer's most annoying tasks which is elliminated with the use of this display. The contrast voltage ( VCON ) is created by applying between 0.8 and 2.8 volts to the display; this is easily created from 5 volt or 3.3v logic supplies.
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Optical Characteristics at 25°C
| Item |
Symbol |
Typical |
Unit |
Condition |
| Turn on time |
TON |
180 |
ms |
q=0·, f=0· |
| Turn off time |
TOFF |
110 |
ms |
q=0·, f=0· |
| Contrast ratio |
CR |
30 |
- |
q=0·, f=0· |
| Visual range ("up & down") |
q1 |
-40<q1<+20 |
degrees |
q=0·, CR > 3 |
| Visual range ("left & right") |
q2 |
-40<q2<+40 |
degrees |
f=90·, CR > 3 |
Electrical Characteristics
| Item |
Symbol |
Minimum |
Typical |
Maximum |
Unit |
| Supply voltage for logic circuits |
VDD - VSS |
3.15 |
5.0 |
5.25 |
V |
| Contrast voltage adjustment |
VCON - VSS |
0.80 |
1.60 |
2.80 |
V |
| Frame frequency |
FFRAME |
- |
120.0 |
- |
Hz |
| Current consumption |
IDD |
- |
90.0 |
190.0 |
mA |
Temperature Range
| Item |
Minimum |
Maximum |
Unit |
| Storage temperature |
- 25 |
+ 60 |
·C |
| Operating temperature |
0 |
+ 45 |
·C |
Mechanical Specifications
Weight 0.260 Kg ( 0.571 lbs )
Dimensions K6484L-FF
Connection Details
Displays should be connected by means of the 31-way data connector and the outside two pins of the 3-way backlight connector ( type number JST: BHR-03VS-1 ). The recommended data connector is a Hirose DF9-31S-IV
Contrast Control
The K6484L-FF contains an integral DC-DC converter providing the 28 volts for the LCD drive. The user-adjustable contrast signal (VCON) should be connected by means of an external potentiometer.
Display Part Numbers
Terminal Connections
| Pin |
Description |
Pin |
Description |
Pin |
Description |
| 1 |
LD4 |
11 |
LD0 |
21 |
VSS |
| 2 |
VSS |
12 |
VCON |
22 |
UD3 |
| 3 |
LD5 |
13 |
LD1 |
23 |
UD4 |
| 4 |
Frame |
14 |
VDD |
24 |
UD2 |
| 5 |
LD6 |
15 |
VSS |
25 |
UD5 |
| 6 |
Load |
16 |
VDD |
26 |
UD1 |
| 7 |
LD7 |
17 |
LD2 |
27 |
VSS |
| 8 |
VSS |
18 |
-Disp Off |
28 |
UD0 |
| 9 |
VSS |
19 |
LD3 |
29 |
UD6 |
| 10 |
Clock |
20 |
(nc) |
30 |
VSS |
| 31 |
UD7 |
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