New Original LCD 20S401DA2 4X20 Vacuum Fluorescent Display DOT
Matrix VFD LCD Module
DISPLAY SPECIFICATION
1. SCOPE
This specification applies to VFD module (Model No: 20S401DA1)
manufactured by SSVD (Shanghai Samsung V acuum Devices)
2. FEATURES
* Vacuum Fluorescent Display: Self Luminous, High Quality and
Readable Display
* +5VDC Single Power Supply: Built in DC/DC Converter
* Both Parallel and Serial Interface: Baud-rate: 300 ~ 19,200 bps,
Parity Selectable (non, even, odd)
* Two kinds of CG- ROM Font: ASCII + Japanese and ASCII + European
* 4 Brightness Level: 25%, 50%, 75% and 100%
* Character Format: 5*7 Dot Matrix
| Item | Description |
| Product Name | 4X20dots VFD LCD Module |
| Model No. | RY20S401DA1 |
| Dot Format | 4x20 |
| Outline (mm) | 150.0* 64.0 * 28.6 |
| Glass Size(mm) | 118.2 *48.3 |
| Display Area( mm) | 89. 52 * 33.07 |
| Character Format | 5 * 7 Dot Matrix |
| Number of Digits | 80 (4 lines * 20 characters) |
| Backlight | LED backlight |
| Power supply | 5V |
WHAT'S VFD MODULE
A VFD module incorporates a controller, anode driver, grid driver
and power supply circuit to make evaluation easy.
Perform a variety of display control functions using a simple
command. Multiple interface options are available.
To accomodate customer specifications, we can do special orders for
interface and software.
The CU-U series displays are all built with LCD compatible
dimensions and HD44780 command sets. These displays are easy to
read due to high contrast, have wide viewing angles and are easier
to read at short and long distances. Additionally, VFD displays
have a quick display response within the module’s temperature range
of -40C to +85C. Noritake offers long term supply and engineering
support with their products.
Vacuum Fluorescent Display provides filaments that create electron
density. Filaments function as a Warm Electrode. When subjected to
heat by an electric current, filaments produce electrons.It also
contains (luminescence) cathodes, which are employed form the
digits and letters.
Thin metal grids encompass the anodes, trying to control the
dissemination of electron density from the filaments to the anodes.
Whenever the charged particles transmitted by the filaments attack
the luminescence, it lights up.
A vacuum fluorescent display, compared to a liquid crystal display,
transmits extremely strong light with contrast ratio and also can
assistance display components of various color combinations. VFD
illumination statistics seem to be typically around 640 cd/m2, with
high-brightness VFDs functioning at 4,000 cd/m2 and investigational
modules achieving as high as 35,000 cd/m2 based mostly on drive
voltage and timeframe.
