Product Subtitle / Keywords:
5.0 Inch IPS Display, HD+ 720x1280 Resolution, Transmissive a-Si TFT, MIPI DSI Interface, FL7703N Driver IC, COG+FPC+B/L+LENS, High Brightness 500 cd/m², Wide Viewing Angle 80/80/80/80, Normally Black Mode, -20°C to +70°C Operation, Detailed Reset and MIPI Timing, Version Controlled Design (V2)
Comprehensive Technical Specification & Application Guide
1. Executive Summary & Product Positioning
The LSL050I26-MP-V2, developed by LESSON (Wan‘an) Zhixian Technology Co., Ltd., is a high-definition 5.0-inch transmissive amorphous Silicon TFT-LCD module. This comprehensive product specification book meticulously defines its structural composition as a COG+FPC+B/L+LENS module, detailing its physical dimensions, electrical characteristics, pin functions, exhaustive MIPI DSI timing parameters (both High-Speed and Low-Power modes), and comprehensive electro-optical performance. The module delivers a resolution of 720(RGB)*1280, capable of displaying up to 16.7 million colors, with a typical luminance of 500 cd/m² and a contrast ratio of 1200:1. It is designed for stable operation within a -20°C to +70°C temperature range using a standard MIPI interface. The document serves as the definitive reference for all hardware design parameters. A critical recommendation for product selection and development is to perform matching verification strictly based on this specification. This ensures electrical compatibility, signal integrity, and that the final product achieves the specified optical performance. Furthermore, the document includes a version history, with V2 specifically noting a revision to the foam adhesive thickness (from 1.4mm to 1.3mm), underscoring the importance of using the latest revision for mechanical integration.
2. Detailed Product Overview & Architecture
- Core Technology: Transmissive-type a-Si TFT-LCD with an IPS (In-Plane Switching) panel, providing wide viewing angles.
- Display Characteristics: Capable of displaying up to 16.7 million colors. Operates in Normally Black (NB) mode, which typically offers higher contrast for dark backgrounds.
- Module Construction: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight Unit) + LENS. The "LENS" indicates an integrated cover lens or protective window, making it a more robust, front-sealed unit.
- Interface: Standard MIPI DSI interface, with detailed timing for high-speed data transmission.
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
- Panel Size (Diagonal): 5.0 inches
- Active Display Area (H×V): 62.1 mm × 110.4 mm
- Module Size (LCM+LENS, H×V×D): 70.6 mm × 125.8 mm × 3.09 mm (including adhesive)
- Number of Dots (Resolution): 720 (RGB) × 1280 pixels
- Display Mode: Normally Black, Transmissive type
- Viewing Direction: Free (inherent to IPS technology)
3.2 Optical & Electro-Optical Characteristics (Typical @ Ta=25°C)
- Surface Luminance (L): 500 cd/m² (Typical) @ If=40mA.
- Contrast Ratio (CR): 900 (Min), 1200 (Typ) @ center, 0° viewing angle.
- Viewing Angle (θT/θB/θL/θR, CR > 10): 70° (Min), 80° (Typ) for all directions (Top, Bottom, Left, Right).
- Response Time (Tr + Tf): 25 ms (Typical), 35 ms (Maximum).
- Transmittance (T%): 4.3% (Min), 4.8% (Typ).
- White Point Chromaticity (CIE1931): Wx ≈ 0.309, Wy ≈ 0.338 (Typical).
3.3 Electrical & Interface Specifications
- Interface Type: MIPI DSI.
- Driver IC: FL7703N.
- Absolute Maximum Ratings:
- Supply Voltage (VCC): -0.3V to +6.6V
- I/O Supply Voltage (IOVCC): -0.3V to +5.5V
- Operating Temperature (TOPR): -20°C to +70°C
- Storage Temperature (TSTR): -30°C to +80°C
- Electrical Characteristics (Recommended Operating Conditions):
- Supply Voltage (VCC): 2.5V to 3.3V (Typ. 2.8V)
- I/O Supply Voltage (IOVCC): 1.65V to 3.3V (Typ. 1.8V)
- Input Logic Levels: VIL ≤ 0.3IOVCC; VIH ≥ 0.7IOVCC
- Backlight Unit (BLU): 14-chip White LED. Backlight Drive: VF = 22.4V; If = 20mA * 2 (40mA total).
3.4 Pin Description (Example from 26-pin connector)
A detailed pinout is provided. Key pins include:
- Power: IOVCC (Pins 18, 19), VCC.
- Ground: Multiple GND pins (13, 16, 17, etc.).
- MIPI Differential Signals: Data lanes (D0P/N, D1P/N, D2P/N, D3P/N) and Clock lane (CLKP/N).
- Control Signals: RESET (Pin 24, Input), TE (Tearing Effect, Pin 25, Output), LCD_ID (Pin 21, Output).
- No Connect (NC): Several pins are marked NC and must be left unconnected.
3.5 Critical Timing & Functional Specifications
3.5.1 MIPI DSI High-Speed Mode Timing
Detailed parameters under conditions VSSA=0V, IOVCC=1.65V to 3.3V, VCI=2.5V to 3.3V, TA=-30 to 70°C:
- UI Instantaneous (UINSTA/B): 1.67 ns (4-Lane @ VDDD=1.8V)
- Double UI Instantaneous (2xUINST): 3.30 ns (4-Lane @ VDDD=1.8V)
- Data Setup/Hold Time (TDS/TDH): 0.15 x UI
- Differential Rise/Fall Times (Clock & Data): 150 ps (Min), Max = 0.3 x UI
- HS Exit Timing (THS-EXIT): ≥ 100 ns.
3.5.2 MIPI DSI Low-Power Mode & Bus Turn-Around (BTA) Timing
- LP State Length (TLPX): ≥ 50 ns.
- HS Prepare Time (THS-PREPARE): 40+4UI to 85+6UI ns.
- Turn-Around Times (TTA-GET, TTAGO): Defined as multiples of TLPXD.
3.5.3 Reset Input Timing – A Critical Focus
- Reset Pulse Width (tRESW): Minimum 10 µs. Pulses shorter than 5µs are rejected; between 5-10µs may trigger reset.
- Reset Complete Time (tREST):
- When reset applied during SLPIN (Sleep-In) mode: 15 ms (Min).
- When reset applied during SLPOUT (Sleep-Out) mode: 120 ms (Min).
- Mandatory Command Wait Time: It is necessary to wait 15 ms after releasing NRESET before sending commands. A Sleep Out command cannot be sent for 120 ms. This is explicitly stated and must be strictly followed in firmware.
3.6 Version History & Mechanical Revision
- V1 (2025-12-03): Initial release.
- V2 (2026-02-04): Revised the foam adhesive thickness to 1.3mm on page 5 of the drawings. This is a critical note for mechanical designers and assemblers, as it affects the stack height and pressure on the module within the housing.
4. Application Guidelines & Critical Notes
- Intended Use: Industrial HMIs, portable medical devices, advanced consumer electronics, handheld test equipment, and any application requiring a 5-inch HD display with good brightness and viewing angles.
- Critical Design Considerations:
- Reset and Initialization Sequence: The firmware must implement the precise reset pulse and mandatory wait times (15ms/120ms). This is non-negotiable for reliable startup.
- High-Voltage Backlight: The backlight requires a ~22.4V supply. A dedicated boost-type LED driver circuit is needed, capable of providing a constant 40mA current.
- MIPI Layout: For stable high-speed operation, the host PCB must have controlled impedance (100Ω differential) for the MIPI pairs, with proper length matching and grounding.
- Mechanical Integration (V2 Specific): Ensure the housing design accommodates the revised 1.3mm foam adhesive thickness for proper mounting and sealing.
- LENS Protection: The integrated lens provides front protection but still requires careful handling to avoid scratches.
- Handling: Observe ESD precautions. The drawings indicate handling features like "tear-off tabs" and "yellow insulating tape."
5. Conclusion & Design-In Support
The LSL050I26-MP-V2 specification provides a complete and precise blueprint for integration. Success hinges on treating the electrical limits, timing parameters (especially reset), and the noted mechanical revision (1.3mm foam) as inviolable design rules. By meticulously following the power sequencing, implementing the correct reset routine in firmware, designing for the MIPI interface, and using the latest mechanical drawings, engineers can ensure this high-brightness, wide-viewing-angle IPS module performs reliably and meets all specified criteria in the target application.
