Tags & Keywords
#TFT-LCD #IPS #RGB #4.45inch #480x854 #16.7MColors #COG #Transmissive #IndustrialDisplay #MedicalDisplay #EmbeddedDisplay #WideViewingAngle #RoHS #LESSON #SmartDisplay
Introduction
This document is the official product specification for the LS045I14-R-V1, a 4.45-inch transmissive a-Si TFT-LCD module developed by LESSON Smart Display Technology Co., Ltd. Featuring a resolution of 480(RGB)x854, 16.7 million colors, and an IPS panel for wide viewing angles, this module is designed for applications requiring a taller aspect ratio display with excellent visual performance. With its 24/18/16-bit RGB parallel interface and comprehensive specifications covering mechanical, electrical, and optical characteristics, it serves as a robust solution for industrial HMIs, medical devices, portable instruments, and various embedded systems.
Key Specifications
- Brand & Model: LESSON Smart Display LS045I14-R-V1
- Screen Size: 4.45 inches (diagonal)
- Active Area: 55.44 mm (H) × 98.637 mm (V)
- Driver IC: GC9503CV (as indicated in the Physical Features section)
- Display Technology: Transmissive type a-Si TFT-LCD
- Display Mode: Transmissive, IPS (In-Plane Switching)
- Module Type: COG + FPC + B/L
- Display Resolution: 480(RGB) × 854 pixels
- Display Colors: Up to 16.7 Million Colors
- Module Outline Dimensions: 60.00 mm (H) × 109.00 mm (V) × 2.06 mm (D)
- Interface: 24/18/16-bit RGB Parallel Interface (Data: R[5:0], G[5:0], B[5:0] for 18-bit; Control: HS, VS, DE, PCLK)
- Supply Voltages:
- VCI (Analog Power): 2.5V ~ 3.3V (Typical: 2.8V)
- IOVCC (I/O Power): 1.65V ~ 3.3V (Typical: 1.8V)
- Absolute Maximum Ratings: Implied from similar models.
- DC Electrical Characteristics: Defines VIL, VIH levels relative to IOVCC.
- Backlight: 5 strings, 2 parallel White LEDs (Drive: I_F=40mA, V_F=15±0.8V)
- Optical Characteristics (Typical @ I_F=40mA):
- Luminance: 350 cd/m²
- Contrast Ratio: 700:1
- Response Time (Tr+Tf): 20 ms
- Viewing Angle (CR>10): 80° (All sides: Top, Bottom, Left, Right)
- Environmental Compliance: RoHS Compliant
General Description
The LS045I14-R-V1 is a high-quality display module built around a wide-viewing-angle IPS panel with a taller aspect ratio suitable for modern user interfaces. It is controlled by the GC9503CV driver IC, which supports a flexible RGB parallel interface (configurable as 24, 18, or 16-bit). This interface is commonly used with processors that have a dedicated LCD controller, providing pixel data synchronized by HS (Horizontal Sync), VS (Vertical Sync), and PCLK (Pixel Clock) signals, with DE (Data Enable) for mode selection.
The specification is comprehensive. It includes a detailed pin description for its connector, mapping RGB data bits (R0-R5, G0-G5, B0-B5), control signals, power, ground, and touch panel pins (TP_*). It provides RGB interface timing characteristics, defining the relationships between PCLK, HS, VS, DE, and the data bus. The electro-optical characteristics table is well-defined. A significant portion of the document is dedicated to detailed Inspection Standards (AQL), covering defect criteria for glass, LCD appearance (fibers, scratches, bubbles, dots), FPC, tapes, and glue.
Pin Description (Key Pins)
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 15 | CS | I | Chip select signal. |
| 17 | PCLK | I | Dot clock signal for DPI (RGB) interface. |
| 18 | DE | I | Data enable signal for DPI (RGB) interface. |
| 19 | VS | I | Frame synchronizing signal (Vertical Sync). |
| 20 | HS | I | Line synchronizing signal (Horizontal Sync). |
| 21-26 | R0-R5 | I | Red data bus (6 bits). |
| 27-32 | G0-G5 | I | Green data bus (6 bits). |
| 33-38 | B0-B5 | I | Blue data bus (6 bits). |
| 16, 39, 40 | GND | P | Ground. |
Application Scenarios
- Industrial HMIs: Taller format for process control, data visualization.
- Medical Devices: Portable monitor interfaces, diagnostic equipment.
- Test & Measurement: Handheld instrument displays, data loggers.
- Consumer Electronics: Smart device interfaces, portable multimedia.
- Embedded Systems: General-purpose displays for RGB-capable MPUs.
Conclusion
The LESSON Smart Display LS045I14-R-V1 is a well-specified and reliable display solution that combines IPS visual quality with a flexible RGB interface. Its extensive documentation, including rigorous inspection standards, makes it suitable for quality-conscious applications in industrial and medical fields requiring a reliable taller-format display.
