4 Inch Ultra-thin Serial TFT Display 480x480 Low Power Consumption Script Configuration Intelligent Display With Capacitive Touch For Medical

4 Inch Ultra-thin Serial Port Screen Overview
The ET040COF4848-DC is a 4-inch ultra-thin TFT display designed for low power consumption, making it ideal for medical and intelligent applications. It offers a resolution of 480x480, ensuring clear and sharp visuals with a square aspect ratio. The display features an active area of 71.9mm x 70.2mm, and its outline dimensions are 84.0mm x 84.0mm x 6.1mm, offering a compact and efficient form factor. With a brightness of 300 nits, it provides excellent visibility under various lighting conditions. The display supports capacitive touch for intuitive user interaction, making it versatile for different applications. The viewing angle is wide, with 80° in all directions (L/R/U/D), ensuring optimal visibility from multiple perspectives. The ET040COF4848-DC operates via a serial port interface, simplifying integration with intelligent systems. It operates efficiently within a temperature range of -20°C to 70°C for operation and -30°C to 80°C for storage, making it suitable for diverse environments.
Product Model
ET040COF4848-DC(Capacitive Touch)
ET040COF4848-DCN(No touch)
  

4 Inch Serial Port Screen Product Parameters
Product series: Medical grade
Core processor: 400M SOC processor
Operating system: No operating system, it can run after power on
Protocol type: Default Dacai configuration instruction set, the host computer can be configured to run MODBUSRTU, XGUS protocols.
Scripting language: LUA script, the screen can run logic, protocols and algorithm functions written by the user.
Size: 4.0 inches
Resolution:480x480
Installation direction: supports 0, 90, 180 and 270 degree rotation installation display.
Storage space: 128Mbit
Font library: Built-in vector fonts, edge anti-aliasing processing, supports any size ASCII, GBK, GB2312, UNICODE (global language) font library, and can also customize any computer font display.
Image storage: Supports JPEG, PNG (semi-transparent/fully transparent) compression, and supports image storage of any size. It can store about 150 full-screen pictures in total (based on the size of 70KB/picture, BMP format is not recommended). Depending on the image compression ratio, this value will fluctuate up and down.
Color: 65K colors, 16-bit RGB
Voltage: 5V (±0.2V)
Power consumption: darkest backlight: 0.5W: brightest backlight: 1.1W
Communication method: TTL
Communication baud rate: 1200～921600bps, typical baud rate: 115200bps
Communication connector specifications: FPC1.0-16P
Local download of pictures: SD card, serial port, U disk
Firmware local/remote upgrade: Insert SD card for local upgrade/support user motherboard remote serial port upgrade screen firmware.
Remote image upgrade: Support users to remotely use their own motherboard serial port to upgrade screen-related image projects, fonts, configuration files, etc.
Screen effective display area: 71.9mmx70.2mm
Product size: 84.0mmx84.0mmx6.1mm (MAX, including TP and FPC)
Supporting host computer software: VisualTFT®
Audio playback: MP3 audio format (speaker 4Ω 2W, mono), shares storage space with pictures. If the sampling rate of mp3 format is 128kbps, it will occupy 0.92MB/minute of storage.
Video playback: MP4 video format, sharing storage space with pictures. If a video file has a resolution of 800*600, a video bit rate of 3000Kbps, an audio bitrate of 166Kbps, and a frame rate of 25Hz, it will occupy 21.9MB/minute of storage.

Reliability parameters
Operating Temperature: 20~+70°C
Storage Temperature: 30~+80°C
ESD test: IEC 61000-4-2 Air: ±10KV (no restart)
EFT test: IEC 61000-4-4 national standard 4 (voltage: ±4KV; frequency: 100/5KHZ; time: 120S), no restart, no display abnormality, no touch abnormality and other phenomena, the test function is normal.
Radiation test: EN55022 ClassB

Core competitiveness of products
Learning cycle: 30 minutes to familiarize yourself with the development environment, 3 days to complete human-computer interaction design.
Program debugging: The host computer integrates a "virtual serial port screen," eliminating the need for hardware connection and allowing direct Keil debugging. IDE-bound debugging
Startup Time: Runs instantly upon power-up, eliminating system loading time
Configuration Controls: Features a variety of configuration controls, including multi-language controls, buttons, text, drop-down menus, progress bars, sliders, meters, animations, QR codes, curves, data loggers, circular progress bars, and sub-screen slide controls.
System Keyboard: Built-in virtual numeric and character keyboards, supporting Chinese and English input methods, and customizable keyboards.
Data Logging: Supports exporting data logger content to an SD card.
Layer Technology: Multiple display layers are built into the system for faster switching.
Multilingual Capability: Factory-preset up to 15 global languages, enabling one-click switching without the need for multiple UIs.
Logical Operation Processing: The host computer has an embedded LUA script parser, allowing users to customize complex logic relationships and protocols within the screen, meeting 99.9% of customer product requirements.
Remote Upgrade: Supports remote serial port upgrades of display firmware, project files, specified images, configuration files, and fonts.
Lifecycle: Utilizes a traditional, leading-edge processor, ensuring long-term supply.

4 Inch Serial Port Screen
Display Type: IPS LCD
Backlight: LED
Brightness (cd/m²): 300
Backlight Lifespan (hours): >20,000
Contrast Ratio: 500:1
Viewing Angles (L/R/T): 80/80/80/80

Touch panel (resistance and capacitance optional)
Touch Type: Capacitive Touchscreen (IC: GT911)
Capacitive Touch Modes: Single-touch and Slide Touch
Capacitive Touch Transmittance: Over 90%
Capacitive Touch Lifespan: Theoretically, unlimited touches are possible; touch lifespan is dependent on operating environment (dust and humidity).
Capacitive Cover Customization: Customizable "glass cover + capacitive touch" lamination service based on user drawing dimensions.
Touch Type: Resistive Touchscreen
Resistive Touch Modes: Single-touch and Slide Touch
Resistive Touch Transmittance: Over 80%
Resistive Touch Lifespan: Over 1 million touches per pixel.

Customized services
Customization Fees: For orders of 1,000 units, some customization fees may be waived.
Hardware Circuits: Customizable PCB size, circuit thickness, custom circuitry, military-grade temperature display, and more.
Software Customization: Customizable instructions or controls based on user needs, reducing development effort.
Design Services: Graphic design and product structure design services available.
Other: Customizable on demand to meet all user needs.

Installation diagram
(COF series installation method 1 schematic diagram)

Step 1: The customer opens the hole according to the product size
Step 2: Tear off the 3M adhesive protective film around the back of the touch cover to expose the 3M adhesive
Step 3: Press the screen tightly to ensure that the 3M adhesive on the screen cover is in perfect contact with the cabinet surface
Step 4: Install the customer's main board on the housing and tighten the screws to fix it, and insert the cable
Step 5: Installation Complete

(COF series installation method 2 schematic diagram)

Step 1: Customer drills holes based on product dimensions
Step 2: Tear off the 3M adhesive protective film around the back of the touch cover to expose the 3M adhesive
Step 3: Press the screen tightly to ensure that the 3M adhesive on the screen cover is in perfect contact with the cabinet surface
Step 4: Install the customer main board on the housing and tighten the screws to fix it, and then insert the cable
Step 5: Installation Complete

PRODUCTION AND MANUFACTURING

Application Areas