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KoreanHMI Design: Printing Behind Glass
What to Consider for Functional Elements and High-Quality Surfaces
Glass fronts have become a standard design solution for modern Human-Machine Interfaces (HMIs). They define the overall look and feel of a product and represent strong branding, premium aesthetics, and a flawless surface.
However, designing the user interface comes with specific technical requirements. Printing behind glass is essential to achieve a durable, long-lasting, and high-quality design – especially when the brand identity needs to be reproduced with precision.
What Matters in HMI Design?
- Which printing process is the right one?
- How accurately can colors, gradients, and details be reproduced?
- What truly determines visual quality?
The visual quality of an HMI is not defined by the design alone, but by the precision of the print behind the glass.
Key factors include:
- Color opacity
- Edge sharpness
- Fine line resolution
- Layer structure and alignment
- Precise positioning of print, display, and cut-outs
Even minor imperfections such as light leakage, color deviations, or visible edges can significantly impact the perceived quality.
???? This is where the right printing technology and a stable, controlled production process become critical.
Quelle: EVYTRA, Technischer und Design-Druck
Starting Point: Your Design Requirements
At EVYTRA, the first step is always the same:
???? What do you want to achieve?
- Smooth gradients and visual depth:Many designs require soft color transitions and dynamic visual effects Digital printing is ideal here, enabling seamless gradients and high-resolution image printing that cannot be achieved with screen printing.
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Invisible buttons (dark design):So-called dark design is often implemented using black glass surfaces with backlit symbols.The goal: Controls remain invisible when inactive and appear only when activated. This requires precisely coordinated print layers, including opaque and intermediate layers.
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Cut-outs and precise alignment: If your interface includes cut-outs, precision becomes critical. Large tolerances can result in: Light leakage or visible glass edges. EVYTRA works with tolerances in the sub-millimeter range to ensure perfect alignment between print, display, and cut-outs.
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Brand identity through color and logos: The company logo is central to every design – and color accuracy is essential. Exact reproduction of RAL and Pantone colors, Clean, sharp lines and consistent appearance across series production. Even small deviations can significantly affect the overall impression.
At EVYTRA, precision is ensured through spectral color measurement and tight material coordination.
Key Factors in Design Printing
- Line thickness: Fine, precise lines prevent light leakage and create a premium look
- Functional integration: Sensor areas, touch zones, and cut-outs must be considered early in the design
- Durability: Back-printed glass is resistant to UV, moisture, and chemicals – ideal for building automation, outdoor, and medical applications
- Reproducibility: Automated color and position checks ensure consistent quality across large production runs
Combining Screen Printing and Digital Printing
In many projects, EVYTRA combines both technologies:
- Screen printing: Ideal for opaque areas, masking, and functional layers
- Digital printing: Perfect for gradients, detailed graphics, and transparent effects
With up to 10 print layers, screen printing enables:
- Brilliant colors
- Uniform surfaces
- Functional layers (e.g. for light control or sensor integration)
At the same time, modern digital printing ensures:
- High-resolution graphics
- Smooth gradients
- Consistent quality from prototype to mass production
EVYTRA – Your Partner for High-Quality Glass Printing
For over 50 years, EVYTRA has been developing and manufacturing high-quality HMI surfaces for industries such as industrial applications, medical technology, and automotive components.
From design to series production, we support your project with:
- Technical precision
- Brand-compliant design
- Reliable, stable processes
Your Benefits
- Up to 10 screen printing layers
- Precise RAL and Pantone color matching
- Tight tolerances and high fitting accuracy
- Combination of screen and digital printing
At EVYTRA, design is not just decoration – it is part of the function.
???? The result: HMIs that impress visually, haptically, and technically.
Planning a New HMI?
Whether you are developing a new interface or optimizing an existing one – EVYTRA supports you from design consulting to series production.
???? Get in touch with us for a non-binding consultation.