20+ Years
Embedded display engineering, end to end
Full Lifecycle Support
Products supported across full lifecycles
Field-Proven
Global deployments in demanding environments
Production-ready
Low-risk interfaces built to work the first time
Button Board
Volume Discount
Available Models & Details
Button Board
Brightness Adjustment
Brightness Adjustment
Most 4DHDMI models have the ability to have the backlight brightness adjusted to suit the end application, or the end-users preference.
Some models feature an OSD (On Screen Display) menu system, where the brightness can be adjusted with the buttons provided, and saved. Some models do not have buttons on them directly, and require a plug-in button board. By default, the display modules do not come with this external button board, however it is available on request from our Sales Team, please make contact with your requirements.
Some models feature a single push button on the PCBA, which when pressed will step and cycle through the various brightness options available, and the selection will be saved.
Some models also support DDC (Display Data Channel) with CI (Command Interface), commonly referred to as DDC/CI. This allows a connected computer to control the display's brightness via software commands sent over the same HDMI cable used for the video signal — no physical buttons required. Refer to the specific model information to confirm DDC/CI support.
On the Round 3.4" / 4.0" 4DHDMI products and 10.1" 'L' models, brightness is fixed and cannot be changed by the end-user.
Button Board Connections
Brightness Adjustment
Brightness Adjustment
Most 4DHDMI models have the ability to have the backlight brightness adjusted to suit the end application, or the end-users preference.
Some models feature an OSD (On Screen Display) menu system, where the brightness can be adjusted with the buttons provided, and saved. Some models do not have buttons on them directly, and require a plug-in button board. By default, the display modules do not come with this external button board, however it is available on request from our Sales Team, please make contact with your requirements.
Some models feature a single push button on the PCBA, which when pressed will step and cycle through the various brightness options available, and the selection will be saved.
Some models also support DDC (Display Data Channel) with CI (Command Interface), commonly referred to as DDC/CI. This allows a connected computer to control the display's brightness via software commands sent over the same HDMI cable used for the video signal — no physical buttons required. Refer to the specific model information to confirm DDC/CI support.
On the Round 3.4" / 4.0" 4DHDMI products and 10.1" 'L' models, brightness is fixed and cannot be changed by the end-user.
Brightness Adjustment
Product Availability Statement
Frequently Asked Questions
Find quick answers about our display modules, embedded integration, customization capabilities, and system compatibility.
How do I choose the right display module for my project?
Start by identifying the demands of your product environment: required screen size, touch capability, operating conditions and UI complexity. Our consistent form-factor families allow you to select a module that fits your constraints today and upgrade performance later without redesigning your enclosure or PCB. Our documentation hub provides comparison tables to assist selection.
What is the difference between a smart display and a host-driven display?
Smart displays include an onboard processor that handles graphics, widgets, UI logic and drawing commands internally. This reduces load on your host MCU, simplifies code and often shortens development time dramatically. Host-driven modules require the host MCU to manage everything, which may be appropriate for minimal UIs but introduces more integration work.
Can I upgrade processors without changing my enclosure or PCB?
Yes. Our architecture is deliberately designed around footprint consistency. Most display families maintain identical mechanical and electrical footprints across multiple processor types, enabling generation-to-generation performance improvements without mechanical redesign.
Do you offer non-touch and touch options?
Yes. Many display families provide variants for non-touch, resistive-touch and capacitive-touch configurations. Capacitive-touch variants are recommended for modern, responsive UI experiences.