1. Product Definition
Liquid Crystal Digital Display is an electronic device that shows numbers, characters or graphics through the photoelectric effect of liquid crystal materials. It is usually composed of an LCD panel, a driving circuit, a backlight module and a housing, and is widely used in measuring instruments, consumer electronics and industrial equipment.
2. Core Features
(1) Display technology
Liquid crystal type: TN/STN/TFT (Resolution ranging from simple characters to high-definition color).
Display content: Supports numbers (such as 0.0001 high precision), symbols (units/states), and simple graphics (battery ICONS, progress bars).
Drive mode: Segment code type (low cost) or dot matrix type (flexible and programmable).
(2) Optical performance
Contrast ratio: ≥100:1 (STN screen visible in sunlight).
Viewing Angle range: 6/12 o 'clock direction (TN screen) or full viewing Angle (IPS technology).
Backlight: LED side light /EL backlight (power consumption <0.5W), RGB color backlight is optional.
(3) Electrical parameters
Working voltage: 3V - 5V DC (Low power consumption design, suitable for battery power supply).
Response time: 10ms to 200ms (no dynamic ghosting, suitable for static display).
Temperature range: -20℃ to 70℃ (Industrial grade can reach -40℃ to 85℃).
(4) Mechanical structure
Size: 0.5 inches to 10 inches (modular design, customization supported).
Interface: SPI/I2C/ Parallel bus (compatible with direct drive by MCU).
Protection grade: IP65 (dustproof and waterproof, suitable for outdoor equipment).
3. Typical Application scenarios
Key requirements of industry application cases
Industrial control temperature controllers, PLC panels, anti-interference, wide temperature range, and long service life
Medical equipment such as blood pressure monitors and blood glucose meters feature high precision, low power consumption and easy readability
Consumer electronics such as electronic scales and smart sockets feature low-cost and lightweight designs
The automotive electronic instrument panel and OBD display are vibration-resistant and have high brightness
The multimeter and oscilloscope for instruments and meters display multiple parameters on the same screen with a refresh rate of ≥1Hz
4. Product advantages
Energy-saving and highly efficient
The power consumption is as low as the μA level (when the segment code LCD has no backlight), and the button battery can last for several years (such as in calculators).
(2) Strong visibility
Customized design: Supports reverse display, negative display, and area highlighting (such as barcode scanner screens).
(3) Stable and reliable
There is no risk of screen burn-in (compared with OLED), and the lifespan is over 50,000 hours (with no mechanical wear).
(4) Cost optimization
The unit price of the segment code screen after mold opening is less than $0.1 (for large-scale applications such as electronic clocks).
