DISPLAY & UI Simplifying display
integration with USB-C - one connection, three functions
By Relec Electronics A
s equipment becomes smaller and more connected, engineers must accommodate increasing functionality within increasingly restricted spaces. USB-C display technology provides a practical way to simplify integration by carrying power, video and touch data through one compact connector.
A conventional touchscreen display may require separate connections for its power supply, video signal and touch interface. Each connection takes up space, adds components and introduces another potential point of failure. Combining these functions through USB-C can reduce cabling, simplify assembly and create a cleaner internal system architecture.
Power, video and touch through one connector
A correctly confi gured USB-C connection can supply power to the display, carry the video signal using DisplayPort Alternate Mode and transmit touch data back to the host system. The result is a responsive touchscreen display operating through a single cable.
For engineers, this can provide several practical benefi ts: • • • • • •
Fewer cables and connectors
Reduced installation and assembly time Simpler equipment maintenance Less space required for internal wiring Easier connection and replacement
A cleaner design for portable and space-constrained equipment The reversible USB-C connector also helps prevent incorrect insertion, making it suitable for equipment that users connect and disconnect regularly.
USB-C is the physical connector, so compatibility between the host computer, cable and display still requires careful consideration. The host must support the necessary video mode and provide enough power for the selected display.
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Cable specifi cation and length can also affect performance. Confi rming these requirements early in the design process helps avoid integration problems later.
Display sizes for different applications
Relec Electronics supplies USB-C displays in sizes from 7� to 15.6�.
Smaller displays are suitable for handheld test equipment, embedded control panels and portable devices where available space is limited. Larger sizes can support industrial HMIs, medical equipment, navigation systems and other applications that need to present more detailed information. The display must be selected around more than its physical size. Resolution, brightness, viewing angle, touch performance and operating environment all affect usability. Applications exposed to strong ambient light may need a high-brightness backlight, optical bonding or anti-refl ective surface treatment. Industrial designs may also require extended operating temperatures, enhanced mechanical construction or a
SEPTEMBER 2026 | ELECTRONICS FOR ENGINEERS customised cover lens.
A complete display solution The main advantage of USB-C is not simply having a newer connector. It is the opportunity to simplify the complete display assembly while retaining power, video and touch functionality.
Relec works with engineering teams to assess the host connection, power requirements, mechanical fi t and optical performance. The display can then be supplied as a standard product or adapted with options including PCAP touch, optical bonding, cover lenses, surface treatments, enhanced backlights and mounting frames. With display sizes ranging from 7� to 15.6� and three essential functions carried through one connector, USB-C provides a compact and effi cient interface for modern equipment. Early consideration of electrical compatibility, cable performance and environmental requirements ensures that the fi nal display performs reliably within the complete system.
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