Green Vacuum Fluorescent Displays
Description
Green Vacuum Fluorescent Displays (VFDs) are electronic display devices that emit a bright green light. They are designed to provide high visibility and readability in various lighting conditions. These displays are commonly used to present alphanumeric information and simple graphics.
Working Principle
Green VFDs operate by utilizing a cathode, grid, and anode within a high-vacuum glass envelope. The cathode is heated to emit electrons, which are then accelerated towards the anode through a positively charged grid. The anode is coated with a fluorescent material that emits green light when struck by the electrons. This process allows the display to produce bright and clear images. The usefulness of VFDs lies in their ability to offer high brightness and wide viewing angles, making them suitable for environments where visibility is crucial.
Applications
Green VFDs are used in a variety of applications where clear and bright displays are necessary. Specific examples include automotive dashboards, where they provide critical information to drivers, and consumer electronics like microwave ovens and audio equipment, where they display settings and operational status. They are also found in industrial equipment for displaying data and status indicators.
Advantages over other Vacuum Fluorescent Displays
Green VFDs offer specific advantages over other color variants of VFDs. The green color is particularly effective in low-light conditions, providing better contrast and readability. Additionally, green displays are often preferred for their aesthetic appeal and compatibility with a wide range of optical filters, enhancing their versatility in different design applications.
Limitations
One limitation of green VFDs is their dependency on high-voltage drivers, which can complicate the design and increase the cost of the overall system. Additionally, they may not perform well in environments with high ambient light, as the fluorescent backlighting is not suitable for such conditions.
Considerations
When considering the use of green VFDs, it is important to account for initial costs, which can be relatively low compared to other display technologies. However, the operating expenses may be higher due to the need for high-voltage drivers. In terms of durability, VFDs are generally robust, but their performance can degrade over time, affecting accuracy. Replacement and maintenance costs should also be considered, as the high-voltage components may require periodic servicing to ensure optimal performance.
from RS Components, Ltd.
Intelligent alphanumeric dot-matrix vacuum fluorescent displays using an emissive technology. Wide viewing angle. Bright blue-green fluorescent image. 4, 5 or 6 luminance levels. Integral display controller, drivers and dc/dc converter. Over 220 characters and symbols. Serial or parallel interface. [See More]
- Display Color: Green
- Number of Rows: 2
- Display Type: Alpha-Numeric
- Number of Characters: 16
from RS Components, Ltd.
Intelligent alphanumeric dot-matrix vacuum fluorescent displays using an emissive technology. Wide viewing angle. Bright blue-green fluorescent image. 4, 5 or 6 luminance levels. Integral display controller, drivers and dc/dc converter. Over 220 characters and symbols. Serial or parallel interface. [See More]
- Display Color: Green
- Number of Rows: 2
- Display Type: Alpha-Numeric
- Number of Characters: 20
from RS Components, Ltd.
Intelligent alphanumeric dot-matrix vacuum fluorescent displays using an emissive technology. Wide viewing angle. Bright blue-green fluorescent image. 4, 5 or 6 luminance levels. Integral display controller, drivers and dc/dc converter. Over 220 characters and symbols. Serial or parallel interface. [See More]
- Display Color: Green
- Number of Rows: 2
- Display Type: Alpha-Numeric
- Number of Characters: 16
from RS Components, Ltd.
High-brightness low-profile dot matrix graphic display modules. The modules include the VFD glass, VF drivers and microcontroller. 8-bit Parallel/Serial Interface (Selectable by jumper). Low Profile Construction. Single 5Vdc Supply. All of the displays use a green phosphor with 505nm peak wavelength... [See More]
- Display Color: Green
- Viewing Area Width: 52.5
- Display Type: Alpha-Numeric
- Viewing Area Height: 11.45
from RS Components, Ltd.
Intelligent alphanumeric dot-matrix vacuum fluorescent displays using an emissive technology. Wide viewing angle. Bright blue-green fluorescent image. 4, 5 or 6 luminance levels. Integral display controller, drivers and dc/dc converter. Over 220 characters and symbols. Serial or parallel interface. [See More]
- Display Color: Green
- Number of Rows: 2
- Display Type: Alpha-Numeric
- Number of Characters: 20
from RS Components, Ltd.
Intelligent alphanumeric dot-matrix vacuum fluorescent displays using an emissive technology. Wide viewing angle. Bright blue-green fluorescent image. 4, 5 or 6 luminance levels. Integral display controller, drivers and dc/dc converter. Over 220 characters and symbols. Serial or parallel interface. [See More]
- Display Color: Green
- Number of Rows: 2
- Display Type: Alpha-Numeric
- Number of Characters: 16
from RS Components, Ltd.
Intelligent alphanumeric dot-matrix vacuum fluorescent displays using an emissive technology. Wide viewing angle. Bright blue-green fluorescent image. 4, 5 or 6 luminance levels. Integral display controller, drivers and dc/dc converter. Over 220 characters and symbols. Serial or parallel interface. [See More]
- Display Color: Green
- Number of Rows: 1
- Display Type: Alpha-Numeric
- Number of Characters: 12
from RS Components, Ltd.
High-brightness low-profile dot matrix graphic display modules. The modules include the VFD glass, VF drivers and microcontroller. 8-bit Parallel/Serial Interface (Selectable by jumper). Low Profile Construction. Single 5Vdc Supply. All of the displays use a green phosphor with 505nm peak wavelength... [See More]
- Display Color: Green
- Viewing Area Width: 164
- Display Type: Alpha-Numeric
- Viewing Area Height: 40.22
from RS Components, Ltd.
High-brightness low-profile dot matrix graphic display modules. The modules include the VFD glass, VF drivers and microcontroller. 8-bit Parallel/Serial Interface (Selectable by jumper). Low Profile Construction. Single 5Vdc Supply. All of the displays use a green phosphor with 505nm peak wavelength... [See More]
- Display Color: Green
- Viewing Area Width: 57.48
- Display Type: Alpha-Numeric
- Viewing Area Height: 28.68
from RS Components, Ltd.
High-brightness low-profile dot matrix graphic display modules. The modules include the VFD glass, VF drivers and microcontroller. 8-bit Parallel/Serial Interface (Selectable by jumper). Low Profile Construction. Single 5Vdc Supply. All of the displays use a green phosphor with 505nm peak wavelength... [See More]
- Display Color: Green
- Viewing Area Width: 115
- Display Type: Alpha-Numeric
- Viewing Area Height: 28.7
from GSE Scale Systems
For applications that require an elevated level of flexibilityover elementary weighing indicators, the Model 460 and465 Indicators are the perfect solution. • 15 Variable Data Registers • 2 Scale Input Signals • 4K Byte Database Memory • 8 I/O, Variable Activation and... [See More]
- Display Color: Green
- Number of Rows: 2
- Display Type: Alpha-Numeric
- Number of Characters: 6