Explore our core product lineup featuring advanced optical bonding, wide-temperature resistance, and high-performance capacitive and resistive architectures.
Designing a 4-inch touch screen display assembly for rugged, medical, or specialized industrial environments requires precise material, electrical, and optical integration. As a leading China-based manufacturer, we customize your stack-up based on standard operating envelopes.
Glass-on-Glass (GG) or Glass-on-Film-on-Film (GFF) structures. Supported by controllers from leading IC houses including ILITEK, EETI, Goodix, and FocalTech to guarantee high multi-touch sensitivity and water-rejection performance.
Precision 4-wire and 5-wire resistive setups for glove operation, heavy industrial HMI controls, and pressure-sensitive input setups. Resistant to heavy moisture, grease, dust, and electrical noise.
Direct liquid Optical Bonding (OCR) or dry film optical bonding (OCA) under class 100/1000 cleanroom environments. Reduces reflection index differences to improve readability in direct sunlight.
| Parameter Spec | Standard Specification Options | Specialized Customization / OEM Capability |
|---|---|---|
| Diagonal Sizes | 4.0 inch / 4.3 inch (Custom ratios available) | Tailored aspect ratios, ultra-thin profiles, custom sensor layouts |
| Sensor Types | Projected Capacitive (PCAP) / 4-Wire Resistive / 5-Wire Resistive | Custom touch button shapes, integrated finger guide overlays |
| Bonding Technology | Air Bonding (Frame bonding) | Full Optical Bonding (OCA/OCR) using index-matched polymer resins |
| Controller Interface | I2C, USB, SPI, RS232 | Custom FPC pinouts, long trace routing, shielded cables |
| Cover Glass Treatment | Standard soda-lime chemically strengthened glass | Corning Gorilla Glass, AGC Dragontrail, AG (Anti-Glare), AR (Anti-Reflective), AF (Anti-Fingerprint) coatings |
| Driver Compatibility | Windows, Android, Linux, RTOS | Firmware tuning for thick gloves, saltwater exposure, and medical hygiene standards |
We are a highly specialized manufacturer dedicated to the research, development, production, and service of resistive touch panels, capacitive touch panels, cover glass, and high-precision module bonding. With an active production footprint of 3,000 square meters, our facility represents the vanguard of professional touch module manufacturing in Southern China.
By implementing a strict ISO 9001:2015 Quality Management System and ISO 14001:2015 Environmental Management System, we ensure every custom touch screen panel conforms to absolute global tolerances. Our engineering group has obtained over 30 design and utility patents, offering a level of deep structural customization that mass market display brokers simply cannot replicate.
Class 100/1000/10000 Dust-Free Workshops
Ensuring particle-free optical laminations and sensor printing processes.
Small-format touch screens are essential interfaces across several core industries. We tailor our 4-inch product lines to handle specific stressors native to each market vertical.
Medical displays must remain responsive when operators wear latex or nitrile gloves. We use custom PCAP controllers configured to reject moisture droplets and chemical residues. These screens are calibrated to pass strict healthcare EMI emissions and noise immunity standards.
ISO 13485 AlignmentSmart thermostats, secure entry panels, and automation controllers require compact, aesthetically pleasing screens. We support custom-shaped cover lenses, dead-front screen printing, and ultra-narrow border designs. Anti-fingerprint (AF) coatings keep interfaces clean.
High-Contrast IPS LCDsSecure payment systems and bio-identity scanners require highly durable cover plates. We supply impact-resistant chemically strengthened glass (IK07/IK08 ratings) with Anti-Reflective (AR) coatings. This ensures scanning cameras function correctly in high-ambient-light environments.
IK08 Impact Resistance
Guangzhou Xiangrui Optoelectronics Technology Co., Ltd. sits at the heart of Southern China's electronics manufacturing hub. This location gives us direct access to raw materials, including specialty glass and high-grade sensor films, keeping our production cycles fast and cost-effective.
Our engineering division designs customized Flexible Printed Circuits (FPC) to resolve challenges with electromagnetic interference (EMI) and board-level space constraints. By using high-performance trace routing, integrated grounding planes, and local shielding layers, we prevent cross-talk and maintain clean signal pathways between the controller IC and your host processor.
We work with leading chip brands like EETI, ILITEK, Goodix, and Focaltech. This allows us to supply firmware settings that address complex touch behaviors, including dual-mode stylus input, salt-water tolerance, thick glove support, and high-frequency noise rejection.
As small-format display technology evolves, our engineering roadmaps focus on expanding product durability and HMI capabilities.
Touch and Display Driver Integration (TDDI) consolidates the display driver and touch controller into a single chip. This reduces the FPC profile, lowers power draw, and thins out the screen assembly.
For heavy machinery and outdoor marine terminals, out-of-cell designs remain the standard. They isolate the touch sensor from LCD electrical noise, keeping inputs reliable under direct sun and wet conditions.
We are upgrading our manufacturing processes to meet strict global environmental targets. This includes adopting halogen-free assembly adhesives, energy-efficient curing steps, and recyclable packaging.
Navigating global product approvals requires consistent hardware standards. Every touch panel assembly we produce complies with international directives, protecting your supply chain from regulatory holds.
Our raw materials and manufacturing lines fully comply with RoHS and REACH regulations. This simplifies the import and certification process for European and North American markets.
Industrial designs often need active lifetimes of 7 to 10 years. We offer product lifecycle security by maintaining access to identical components and sensor designs, preventing sudden redesign costs.
Every design batch undergoes environmental test cycles inside our quality control labs, including thermal shock tests (-40°C to +85°C), high-humidity storage, ESD contact tests, and steel ball drop tests.
Take a virtual look inside Guangzhou Xiangrui Optoelectronics Technology Co., Ltd. cleanroom workshops.
Clear, technical answers to common integration questions from electrical and systems design engineers.
Optical bonding fills the air gap between the touch sensor and LCD module using index-matched gel (OCA or OCR). This eliminates internal reflections, enhances outdoor legibility by up to 400%, and improves mechanical shock resistance.
We tune our capacitive ICs (such as EETI or ILITEK) using custom firmware algorithms. This setup allows the controller to differentiate between localized finger presses and large, conductive water droplets, preventing false inputs.
We offer Anti-Glare (AG) etching to minimize glare, Anti-Reflective (AR) coatings to boost contrast, and hydrophobic Anti-Fingerprint (AF) coatings. We also build custom cover glass shapes with beveled or rounded 2.5D edges.
Yes. Our engineering team designs custom Flex Printed Circuits (FPC) with specific trace configurations, shielding options, and connector interfaces (such as ZIF or board-to-board) to fit your system housing.
Our manufacturing facility is certified under ISO 9001 and ISO 14001. All final touch screen modules are manufactured with RoHS and REACH-compliant materials to satisfy international import standards.
Yes, we customize 4-wire and 5-wire resistive touch panels. We tailor active areas, trace routing, tail structures, loop resistances, and film finishes (glossy or matte anti-newton ring) to meet your project specifications.
Browse our larger format panels, specialty wide-temperature industrial screens, and customized capacitive overlays.
Xiangrui Optoelectronics