LCD Display(Liquid Crystal Display) is a widely used display technology in consumer electronics, industrial control, automotive, and more.
Based on functionality and interface type, LCDs are generally classified into:
Monochrome LCDs (Segment or Dot Matrix)
LCD Display with Touch Screens (Capacitive/Resistive)
Commonly used in TFT LCD Module, character lcd display, and graphic LCDs
Signal lines: D0–D7 / D0–D15 + control signals (RS, WR, RD, CS, RST)
Advantage: High-speed transmission
Disadvantage: Occupies many MCU pins
Suitable for small TFT lcds, OLED displays, and character LCD displays
SPI: SCLK, MOSI, MISO, CS
I2C: SCL, SDA
Advantages: Fewer pins, easier wiring
Disadvantages: Slower speed compared to parallel
Used in medium-to-large TFT LCDs (typically 4.3" and above)
Signals: RGB data lines (R, G, B), sync lines (HSYNC, VSYNC), DE, PCLK
Advantages: Real-time image display, high color quality
Disadvantages: Requires high-performance controller
Found in high-resolution LCD Displays (smartphones, tablets)
High-speed serial interface
Disadvantages: Requires application processor or special controller; not MCU-compatible
Used in laptops, monitors, and industrial panels
Differential signal transmission for better EMI performance
Disadvantages: Requires dedicated driver board or motherboard
Connection Type |
Advantages |
Disadvantages |
FPC + ZIF connector |
Compact, mass production friendly |
Slightly more costly |
Pin header soldering |
Low cost, easy for prototyping |
Not ideal for mass assembly |
Zebra strip |
Ultra-thin, clean appearance |
High assembly precision required |
Module package |
Plug-and-play |
Higher cost |
Voltage compatibility (3.3V vs 5V)
Initialization timing based on controller datasheet
Wiring guidelines: short, direct, and shielded if possible
Power stability: include decoupling capacitors and proper grounding
Touch panel handling (I2C or USB interface)
Application |
Display Type |
Interface |
Control Method |
STM32 Dev Board |
1.8 TFT (ST7735S) |
SPI |
HAL driver or screen lib |
Industrial Terminal |
7 TFT + CTP |
RGB + I2C |
Linux framebuffer |
Instruments |
Segment LCD |
GPIO Direct |
Custom MCU code |
Smart Band |
OLED (SSD1306) |
I2C |
Arduino driver library |
Choose the LCD interface based on size, resolution, controller capabilities, product structure, and performance needs.
For prototyping, SPI/I2C lcd displays are easier to handle.
For final products, consider RGB, LVDS, or MIPI depending on display performance requirements.
The 8 inch displays might be affected and delay for an accident.
This is the project management of how sinocrystal handle your customized project relate to displays.
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