Display modules are self-contained display units comprising LED chips, printed circuit boards (PCBs), and driver circuits. Historically, they were primarily used in the assembly of large LED displays. Today, driven by the growing demand for ‘embedded displays’ in smart devices, the application scope of display modules continues to expand, establishing them as fundamental display components across multiple sectors.

Within the smart terminal sector, display modules serve as the core display units for compact devices. Smart home appliances—such as refrigerators, washing machines, and air conditioners—require small display units to present operational statuses and control parameters. Traditional LCD display modules suffer from low brightness and short lifespans, whereas display modules offer superior high brightness (300–500 cd/m²) and extended longevity (exceeding 50,000 hours), making them the ideal solution. Production processes customise compact display modules ranging from 2.4 to 7 inches to match appliance dimensions. Employing a ‘narrow bezel design’ with frame widths as slim as 1.5mm, these modules integrate seamlessly into appliance control panels, saving space while enhancing display clarity. For instance, in smart refrigerators, embedded display modules show interior temperatures, food expiry alerts, and recipe suggestions, integrating appliance functionality with interactive displays. In smart washing machines, display modules indicate wash cycles, remaining time, and fault codes, facilitating user operation.

Industrial control applications demand robust display modules with exceptional stability and interference resistance. In factory PLC control cabinets, CNC machine tools, and industrial robots, critical information such as equipment operational data and control commands must be displayed within environments characterised by high temperatures, heavy dust, and intense electromagnetic interference. Through optimised manufacturing processes and the adoption of industrial-grade PCB boards, display modules achieve a temperature tolerance range of -40°C to 85°C and meet EMC Class B interference resistance standards, ensuring stable operation in harsh industrial conditions. Additionally, the modules support high-contrast displays (1000:1 or higher), ensuring data remains clearly visible even under intense light. Production processes incorporate anti-glare coatings to minimise light reflection, preventing screen visibility issues for operators and enhancing operational safety. For instance, on CNC machine tool control panels, the display module provides real-time updates on spindle speed, feed rate, machining coordinates and other data at 10 updates per second, delivering critical support for precision machining.

In outdoor signage applications, the display module's ‘high reliability and low power consumption’ advantages are particularly evident. Traffic signs, outdoor directional displays, and emergency indicators require display units capable of prolonged outdoor operation with low power consumption to reduce operational costs. The display module employs a ‘low-power drive chip,’ reducing static power consumption by 40% compared to traditional modules. Additionally, the production process incorporates waterproof sealing, achieving an IP65 protection rating that withstands rain and dust ingress. For instance, on motorway variable message signs, display panels assembled from multiple modules can display real-time information such as ‘congestion ahead’ or ‘speed limit alerts’. The modules' high reliability ensures year-round stable operation of the signs, while their low power consumption reduces the load on solar power systems. In scenic areas, wayfinding displays composed of display modules clearly show attraction locations and visitor routes, providing guidance to tourists. As application domains continue to expand, display modules have evolved from being the ‘core components of display screens’ to becoming ‘multi-domain display units’. Their standardised production characteristics lower the threshold for display applications across various industries, while their flexible adaptability meets the personalised demands of different scenarios, making them a significant driving force in advancing the widespread adoption of display technology.