Product Subtitle / Keywords:
2.0 Inch Display, 240(RGB)×320 Resolution, Transmissive a-Si TFT-LCD, 4-Line SPI Interface, COG+FPC+B/L, 262K Colors, 14-Pin, 300 cd/m² Luminance, 300:1 Contrast Ratio, 30ms Response Time, ALL O'Clock Viewing Direction, -20°C~70°C Operating Temperature

1. Executive Summary & Product Positioning

The LS020I10-S-V1, developed by Lixin (Wan'an) Intelligent Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 2.0-inch transmissive amorphous Silicon TFT-LCD (a-Si TFT-LCD) module.

This product specification (Revision 1.0, Module Type: COG+FPC+B/L) serves as the definitive technical document, defining its structural composition (COG+FPC+B/L), physical features, mechanical dimensions, absolute maximum ratings, detailed electrical characteristics, complete 4-Line SPI (Serial Peripheral Interface) pinout and timing, and comprehensive electro-optical performance. It delivers a resolution of 240(RGB)×320 with 262K-color display capability.

The document provides the core parameters necessary for system integration into compact embedded display applications. The unequivocal recommendation for engineers is to strictly adhere to the electrical specifications, interface timing, and mechanical tolerances described herein to ensure reliable performance and compatibility.

2. Detailed Product Overview & Architecture

• Core Technology: Transmissive-type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display).
• Display Mode: Active matrix TFT, Transmissive type.
• Display Format: Graphic 240(RGB)×320 Dot-matrix.
• Display Characteristics: Capable of displaying up to 262 thousand colors.
• Module Construction: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight Unit). Composed of a TFT-LCD panel, a driver circuit, and a backlight unit.
• Input Data: 4-line serial interface.
• Viewing Direction (Grayscale Inversion): ALL O'Clock.
• Connector Pin Count: 14-Pin.
• Approval Status: ☑ Approved Product Specification only (as per signature block).

3. Exhaustive Technical Specifications

3.1 Mechanical & Physical Specifications

Critical Mechanical Design Notes (from outline dimension drawing):

1. Display Type: Transmissive/Normally Black.
2. Viewing Direction: ALL O'Clock.
3. Polarizer Mode: Transmissive/Normally Black.
4. Operating Temperature: -20°C ~ 70°C.
5. Storage Temperature: -30°C ~ 80°C.
6. Backlight: 3 CHIP-WHITE LED; 60MA, 3.0V.
7. LCM Luminance: 300 CD/M2 (TYP).
8. General Tolerance: ±0.20 mm (unmarked).
9. ROHS Compliance: Yes.
10. Enclosure Design Notes: It is recommended that the housing's visible area be 0.3mm larger per side than the LCD AA area.
11. FPC Total Thickness: FPC+PI=0.3±0.03mm.
12. Silver Paste Position: Indicated on the drawing.
13. Backlight Circuit Diagram: Provided in the drawing.
14. Connector: 14-pin FPC.
15. FPC Bend: The FPC is shipped in a specific bent configuration.

3.2 Electrical & Interface Specifications

3.2.1 Absolute Maximum Ratings

(Not explicitly provided in the extracted document excerpt; refer to Section 5 of the full specification.)

3.2.2 Electrical Characteristics (DC – Recommended Operating Conditions)

(Not explicitly provided in the extracted document excerpt; refer to Section 6 of the full specification.)

3.2.3 Pin Description (14-pin FPC)

Interface Summary:

• 4-Line Serial Interface: Uses SCK (Serial Clock), SDA (Serial Data), A0 (Data/Command), CS (Chip Select), and RESET (Reset) for communication.
• Backlight: Dedicated LED+ (Anode, Pin 4) and LED- (Cathode, Pin 3) pins.
• Power: VDD (Pin 10) for main logic, VDDIO (Pin 11) for I/O interface, GND (Pins 2, 5, 13) for ground.
• Unused Pins: Pins 1 and 14 are NC — leave floating.

3.2.4 Backlight Unit

Backlight Circuit Diagram (from document):

LED+ → [Backlight Circuit] → LED-
IF = 60mA
VF = 3.0V

3.3 Optical & Electro-Optical Characteristics (Ta=25°C)

(Not explicitly provided in the extracted document excerpt; refer to Section 8 of the full specification.)

3.4 Version Record

4. Application Guidelines & Critical Notes

Intended Use

• Low-cost IoT devices
• Simple user interfaces requiring compact size
• Applications where resolution requirements are modest (240x320)
• Wearable devices, smart home controls, miniature instruments

Critical Design Considerations

1. Interface (4-Line Serial): This module uses a 4-line serial interface for communication. The host MCU must have at least 5 GPIOs (SCK, SDA, A0, CS, RESET) to drive the display.

2. Power Supply:

   • Provide stable VDD (2.8V typical) for the main logic (connected to Pin 10).
   • Provide stable VDDIO (1.8V typical) for the I/O interface (connected to Pin 11).
   • The backlight requires a constant-current LED driver connected to LED+ (Anode, Pin 4) and LED- (Cathode, Pin 3), set to 60 mA at approximately 3.0V.

3. Mechanical Integration:

   • Module Outline: 33.6mm (H) × 50.0mm (V) × 2.25mm (D).
   • Active Area: 30.6mm × 40.8mm.
   • FPC: The module uses a 14-pin FPC.
   • FPC Total Thickness: FPC+PI=0.3±0.03mm.
   • Enclosure Design: It is recommended that the housing's visible area be 0.3mm larger per side than the LCD AA area.

4. Viewing Angle Characteristics:
   This module provides ALL O'Clock viewing direction, ensuring consistent image quality from all angles.

5. Optical Performance:

   • LCM Luminance: 300 cd/m² (TYP).
   • Response Time: 30ms (Typ) – suitable for most GUI applications.
   • Contrast Ratio: 300:1 (Typ) – adequate for indoor use.

6. Temperature Limits:

   • Operating Temperature: -20°C to +70°C.
   • Storage Temperature: -30°C to +80°C.

Handling & Compliance

• The module is ROHS compliant.
• Observe standard ESD precautions during handling and assembly.
• The module contains fragile glass and a 14-pin FPC – handle with care.
• The module has a total thickness of 2.25mm – be careful when handling to avoid flexing.

5. Conclusion & Design-In Support

The LS020I10-S-V1 specification details a compact 2.0-inch display module with a 4-line serial interface and 14-pin connector — an excellent choice for cost-sensitive, simple display applications.

Key Strengths:

1. Compact Size: 33.6mm × 50.0mm — suitable for space-constrained applications.

2. Standard Resolution (240x320): Suitable for simple icons, text, and basic UIs.

3. Standard 4-Line Serial Interface: Requires only 5 GPIOs for communication, simplifying integration.

4. High Brightness: 300 cd/m² (TYP) ensures good readability in indoor conditions.

5. Wide Operating Temperature Range: -20°C to +70°C for operation and -30°C to +80°C for storage.

Main Design Focus:

• The critical design task is properly implementing the serial interface timing to ensure reliable communication.
• Supporting requirements:
  • Provide stable VDD (2.8V typical) and VDDIO (1.8V typical) power.
  • Provide a constant-current backlight driver set to 60 mA at 3.0V.
  • Mechanical integration — the module outline is 33.6mm × 50.0mm × 2.25mm.
  • FPC connector — verify the 14-pin FPC.

This module is an excellent choice for designs where cost, size, and simplicity are the primary concerns, such as simple numeric displays, status indicators, or low-cost IoT nodes.