Made in Germany
Development and manufacturing at our site in Braunschweig.
Intelligent HMI Solutions – Made in Germany
We develop and manufacture tailor-made HMI assemblies – from cover glass and PCAP touch to touch lamination, optical bonding, mechanics, and complete integration including electronics and interfaces.
All critical process steps are reproducible and documented in Germany. Our dynamic engineering stands for fast implementation, customized solutions, and a deep understanding of modern HMI systems.
Engineering
Custom HMI architectures & stack-up definition
Cleanroom Manufacturing
ISO-7 environment for optical process reliability
System Integration
Mechanics, electronics & bonding from a single source
Complete Backend Production for Display Modules
As a full-service partner, we take over the complete backend manufacturing for display modules – from sourcing & qualification to incoming goods & QA, touch lamination, optical bonding in the ISO-7 cleanroom, cleanroom assembly, kitting & electronics, as well as final testing, packaging, and shipping. Your advantage: one contact person, one process, one quality standard.
1
Sourcing
Cover glass, touch, displays, electronics, mechanics
2
Incoming Goods & QA
Inspection, documentation, traceability
3
Touch Lamination
PCAP on glass, optional functional films, AR films, protective films, filters
4
Optical Bonding
OCR or OCA in the cleanroom
5
Cleanroom Assembly
Assembly of frames and housings
6
Kitting & Electronics
Mainboards, cables, interfaces
7
Final Testing & Packing
Functional test, visual inspection, shipping
8
Engineering & Project Planning
Development or flexible support for setup and selection of the right components
Your Advantages with BSE
- All steps under one roof – no interface losses
- Cleanroom production with high-end equipment
- High flexibility in formats, quantities & designs
- Reliable quality for demanding applications
- Dynamic engineering for tailor-made HMI solutions
Our Promise
Maximum process reliability, short response times, and 100% quality – for high-end HMI assemblies "Made in Germany".
Service Modules for High-End HMI
Modular structure, yet fully integrable: From the glass/touch front to optical bonding and the ready-to-install unit including mechanics and electronics.
Optical Bonding (OCR / OCA)
Optical bonding permanently connects the display and cover glass – for maximum readability, reduced reflections, and a robust, durable assembly. Depending on the application, we use OCR or OCA and control the entire process under regulated conditions.
- Bubble-free through vacuum & cleanroom processes
- OCR up to 86″ · OCA up to 31.5″
Touch Lamination (PCAP)
Precise connection of cover glass & touch sensor – autoclaved and durable.
- Laminators 5″–24″ & 27″–75″
- Functional films (AR/UV/Privacy) integrable
Cleanroom Production (ISO 7)
Process reliability for optically demanding assemblies – reproducible & stable.
- 250 m² · H14-FFU · Pressure cascade
- Stable climate + ESD protection
PCAP Touch Systems
Sensor design, controller & firmware – robust, precise, industrial-grade.
- Water/glove operation possible · up to 10 touch points
- –30 °C to +85 °C · Windows/Linux/Android
Cover Glass & Finishing
Design + Protection + Visibility – tailored to operating comfort and aesthetics.
- AR/AG/AF · Black-Panel · Screen printing
- Free forms, contours, technical cutouts
Mechanics & System Integration
Ready-to-install modules instead of individual parts – incl. kitting & electronics.
- IP65/IP67 possible · CNC/Hybrid materials
- Interfaces: LVDS/eDP/MIPI/USB/I²C etc.
- Rapid prototyping using industrial 3D printers
Optical Bonding – Maximum Optical & Mechanical Performance
In modern HMI systems, optical bonding is a decisive quality factor: By bonding the display and front glass (or touch), an optically, mechanically, and functionally optimized module is created – free of air inclusions, low-reflection, and particularly robust.
OCR · Optically Clear Resin
OCR (Optically Clear Resin)
In our OCR process, a liquid, transparent silicone material is applied between the display and front unit and then thermally cured. The 2K silicones used were specially developed for display applications – with outstanding optical clarity, flexibility, and long-term stability.
Advantages of the OCR process:
- Perfect optical properties – even in sunlight or at oblique viewing angles
- Very good damping of vibrations and mechanical shocks
- No yellowing – even under UV/heat influence
- Reworkable (display replacement possible)
- Permanently elastic - Extremely low stress, even with temperature changes
- Water-repellent - Can be used without problems in high humidity environments
- Thanks to low-viscosity, self-leveling material properties, the silicone adapts ideally to complex surfaces – effectively preventing bubbles and inclusions
Particularly flexible application:
- Curved displays possible
- Two displays on one cover glass feasible
- Round or free display shapes easily implemented
- Size range: from 5" to 86"
OCA · Optically Clear Adhesive
OCA (Optically Clear Adhesive)
In this process, we use highly transparent adhesive films that are laminated between the display and glass/touch unit in vacuum processes without air inclusions. The result: a durable, optically high-quality, and flat bond.
Advantages of the OCA process:
- Thin construction
- High optical purity
- Very efficient for flat displays and medium quantities
- Size range: from 5" to 31.5"
Touch Lamination – Precise Connection of Cover Glass & Touch Sensor
Touch lamination permanently and precisely connects projective-capacitive touch sensors (PCAP) with the custom cover glass – optionally supplemented by functional films. The process takes place in the ISO-7 cleanroom followed by autoclaving.
Cleanroom Production according to ISO Standard
In optical bonding and touch lamination, even the smallest particles lead to visible defects. Therefore, central processes take place entirely in our own ISO-7 cleanroom – from initial handling to the finished assembly.
ISO 14644-1 Class 7
250 m² cleanroom area + separate material/personnel airlocks
H14-FFU & Displacement Flow
Filtration of finest particles for bubble-free bonding
Pressure Cascade
Targeted flow prevents particle entry into sensitive zones
Climate Control
Stable conditions (approx. 20–21 °C · 45–55 % r. H.)
ESD Protection
Conductive flooring protects sensitive electronics
Process Reliability
Reproducible quality – even for special formats & small series
Proven in Demanding Environments
For systems that must function reliably under light, temperature, vibration, or high quality requirements.
Industrial
Medical Technology
Defense
Automotive
Outdoor / Rugged
Let's Discuss Your HMI Assembly
Whether prototype, small series, or production – we check the stack-up, process choice (OCR/OCA/Lamination), and feasibility and deliver a robust, optically clean solution.
We support you as early as the concept phase – from selecting suitable display and touch technologies to defining the optimal bonding stack-up and serial production transition.
In doing so, we consider not only optical quality but also environmental conditions, lifespan, service concepts, and economic aspects throughout the entire product lifecycle.
Braunschweiger system elektronik GmbH
38112 Braunschweig
Pillmannstr. 29 · Germany
+49 531 23155 0
Send Project Inquiry
Briefly describe your HMI assembly – we will get back to you with questions or a suggested appointment.