What fields of equipment is a 3.5-inch LCD screen suitable for?
Date:2026-01-15
What fields of equipment is a 3.5-inch LCD screen suitable for?
The 3.5-inch LCD screen, with its small size, high integration, low power consumption, and easy embedding characteristics, is suitable for various portable, miniaturized, and embedded devices, especially for scenarios with strict constraints on space and power consumption. The following are the core applicable industries and devices:
I. Industrial control and automation field
Small PLC / Industrial Control Module
Used for local display of compact programmable logic controllers and distributed IO modules, it presents real-time operating status, parameter settings, and fault codes, adapting to the limited installation space in industrial sites.
Handheld industrial detector
Such as portable thickness gauges, hardness testers, temperature and humidity detectors, etc., the 3.5-inch screen can clearly display detection data and curve trends, meeting the needs of rapid on-site detection.
Embedded HMI (Human-Machine Interface)
Integrated onto small valve controllers, motor drivers, and sensor terminals, it serves as a simple interactive screen for parameter adjustment and status monitoring.
II. Medical and Health Sector
Portable medical equipment
Such as blood glucose meters, blood oxygen meters, electrocardiograms (pocket-sized), and portable blood pressure monitors, these devices feature small screens that can directly display test results and waveform charts, making it convenient for patients or medical staff to operate them with a handheld device.
Medical wearable devices
Intended for small medical monitors, sleep monitors, etc., it features low power consumption, suitable for battery power supply, and provides real-time display of basic health data such as heart rate and blood oxygen levels.
Small diagnostic instrument
Such as the supporting display module of ear endoscope and skin detector, which can synchronously present endoscopic images to assist in rapid diagnosis.
III. Intelligent Transportation and Vehicle-mounted Field
On-board small functional screen
Integrated into in-vehicle tire pressure monitors, dashcams, and in-vehicle radar warning systems, it displays tire pressure data, video recording status, and warning information without occupying the main screen space of the central console.
Smart instrument for two-wheeled vehicles
The intelligent dashboard for electric bicycles and motorcycles displays speed, battery level, mileage, and navigation messages, and is compatible with narrow handlebar installation positions.
IV. Smart Home and Security Field
Smart home central control panel
The supporting display screen for miniaturized smart switches, curtain controllers, and thermostats displays the current temperature, switch status, and device linkage mode, and supports touch operation.
Security surveillance equipment
Local display of portable monitors, access control readers, and small NVRs (Network Video Recorders) allows for real-time viewing of surveillance footage and access control records.
smart lock
The display screen of the high-end smart door lock shows unlocking records, battery level, and time, and supports touch-based password input.
V. Consumer electronics and handheld devices
Handheld POS machine / scanner
The display screen of the small portable cash register and barcode scanner displays the payment amount, product barcode, and transaction status, making it suitable for mobile cashier scenarios.
Children's smart devices
The display module of children's phone watches and early education devices displays time, call information, and learning content, while also being compact and low-power.
Portable audio and video equipment
Small MP4 players and accompanying screens for sports cameras display playback interfaces and shooting parameters, meeting the needs of outdoor portable use.
VI. Internet of Things (IoT) and Terminal Devices
Sensor data terminal
For instance, the local display terminal of environmental monitoring sensors (dust and VOC monitoring) presents real-time monitoring data, facilitating on-site inspection and debugging.
Smart storage label
The electronic tags used for smart shelves display the name of the goods, inventory quantity, and inbound and outbound information, adapting to the fine management of warehousing.
Key reference for model selection
Industrial/Medical Scenario: Preferably choose a 3.5-inch screen with wide temperature range (-20℃~70℃), high brightness (≥500cd/㎡), and IPS full viewing angle to meet the requirements for use in harsh environments.
Portable/wearable scenarios: Emphasis is placed on low power consumption, lightweight design, and capacitive touch features, tailored to meet battery-powered requirements.
Do you need me to help you organize a comparison table of mainstream model parameters for 3.5-inch industrial control LCD screens?
AUO LCD Display:https://www.auo-lcd.com/products/auo-lcd-screen/
INNOLUX LCD Display:https://www.auo-lcd.com/products/innolux/
