Product Subtitle / Keywords:
2.0 Inch Display, 320(RGB)×380 Resolution, Transmissive a-Si TFT-LCD, RGB 16BIT / MIPI 2L Interface, COG+FPC+B/L, 262K Colors, 40-Pin, 48.08×49.95×1.96 mm, 300 cd/m² Brightness, 1200:1 Contrast Ratio, 25ms Response Time, Free (IPS) Viewing Direction, -20°C~70°C Operating Temperature
1. Executive Summary & Product Positioning
The LS020I07-MR-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 with IPS (In-Plane Switching) technology.
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 RGB 16BIT and MIPI 2L interface pinout and timing, and comprehensive electro-optical performance. It delivers a resolution of 320(RGB)×380 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 320(RGB)×380 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: RGB 16BIT or MIPI 2L.
- Viewing Direction (Grayscale Inversion): Free (IPS) – wide viewing angle in all directions.
- Connector Pin Count: 40-Pin.
- Approval Status: ☑ Approved Product Specification only (as per signature block).
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Item | Specification | Unit |
|---|---|---|
| Module size (H×V×D) | 48.08 × 49.95 × 1.96 | mm |
| Active area (H×V) | 45.684 × 45.684 | mm |
| Number of dots / Resolution | 320(RGB) × 380 | pixel |
| Panel Size (Diagonal) | 2.0 | inch |
Critical Mechanical Design Notes (from outline dimension drawing):
- Display Type: TFT, Normally Black, Transmissive.
- Viewing Angle: ALL O'CLOCK (IPS).
- Module Luminance (WITHOUT CTP): 300 cd/m² (typ).
- Operating Temperature: -20°C ~ +60°C.
- Storage Temperature: -30°C ~ +70°C.
- Backlight: 3 chip White LED, in Parallel. Vf: 3.2V, If: 60mA.
- **General Tolerance: ±0.20 mm.
- Angular Tolerance: ∠ ±1/4°.
- ROHS Compliance: Yes.
- Dimensions with mark "*" are important, with mark "()" are referenced.
- FPC Pitch: 0.5mm * 40 = 20.00 ± 0.05mm.
- FPC Bend: The FPC is shipped in a specific bent configuration (FPC弯折示意图).
- Backlight Circuit: IF=60mA, Vf=6V (Typ).
- Pin 1 Mark: Indicated on the drawing.
- Unit: mm.
3.2 Electrical & Interface Specifications
3.2.1 Absolute Maximum Ratings
| Item | Symbol | Min | Max | Unit | Remark |
|---|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | 4.6 | V | Note1 Note2 |
| Supply voltage | IOVCC | -0.3 | 4.0 | V | Note1 Note2 |
| Operating temperature | TOPR | -20 | 70 | °C | Note1 Note2 |
| Storage temperature | TSTR | -30 | 80 | °C | Note1 Note2 |
Notes (interpreted):
- Note1/Note2: Stress beyond these ratings may cause permanent damage; functional operation is not implied under these conditions.
3.2.2 Electrical Characteristics (DC – Recommended Operating Conditions)
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply voltage | VCC | 2.65 | 2.8 | 3.3 | V |
| Supply voltage | IOVCC | 1.65 | 1.8 | 3.3 | V |
| Input Voltage (L level) | VIL | 0 | — | 0.3*IOVCC | V |
| Input Voltage (H level) | VIH | 0.7*IOVCC | — | IOVCC | V |
3.2.3 Pin Description (40-pin FPC)
A. RGB 16BIT Interface Mode:
| NO. | Symbol | Level | Function |
|---|---|---|---|
| 1 | LEDK | LED power cathode | |
| 2 | LEDA | LED power anode | |
| 3 | GND | Ground | |
| 4 | VCC | Power setting | |
| 5-13 | GND | Ground | |
| 14 | VS | Vertical sync input | |
| 15 | HS | Horizontal sync input | |
| 16 | DCLK | Dot clock signal for RGB. | |
| 17 | DE | DE | |
| 18-22 | B0-B4 | Data bus. | |
| 23-28 | G0-G5 | Data bus. | |
| 29-33 | R0-R4 | Data bus. | |
| 34 | RESET | Reset signal. | |
| 35 | CS | Chip selection. | |
| 36 | SCL | Serial interface clock | |
| 37 | SDA | Serial data input/output bidirectional pin for SPI Interface. | |
| 38 | IOVCC | Power settingPower setting** | |
| 39 | GND | Ground | |
| 40 | IOVCC | Power setting |
B. MIPI 2L Interface Mode:
| NO. | Symbol | Level | Function |
|---|---|---|---|
| 1 | LEDK | LED power cathode | |
| 2 | LEDA | LED power anode | |
| 3 | GND | Ground | |
| 4 | VCC | Power setting | |
| 5 | DN0 | MIPI-differential Data signal | |
| 6 | DP0 | MIPI-differential Data signal | |
| 7 | GND | Ground | |
| 8 | CKN | MIPI-differential clock signal | |
| 9 | CKP | MIPI-differential clock signal | |
| 10 | GND | Ground | |
| 11 | D1N | MIPI-differential Data signal | |
| 12 | D1P | MIPI-differential Data signal | |
| 13-33 | GND | Ground | |
| 34 | RESET | Reset pin | |
| 35-38 | GND | Ground | |
| 39-40 | IOVCC | Power supply for digital interface |
Interface Summary:
- Dual Interface Support: The module supports two interface modes:
- RGB 16BIT: Uses VS (Vertical Sync), HS (Horizontal Sync), DCLK (Dot Clock), DE (Data Enable), and R0-R4, G0-G5, B0-B4 (16-bit RGB Data Bus) for pixel data transmission. SPI pins (CS, SCL, SDA) are used for register configuration.
- MIPI 2L: Uses DP0/DN0 (Data Lane 0), D1P/D1N (Data Lane 1), and CKP/CKN (Clock Lane) for high-speed serial data transmission.
- Backlight: Dedicated LEDA (Anode, Pin 2) and LEDK (Cathode, Pin 1) pins.
- Power: VCC (Pin 4) for main logic, IOVCC (Pins 38, 40) for I/O interface, GND (Pins 3, 5-13, 7, 10, 13-33, 35-38, 39) for ground.
3.2.4 Backlight Unit
| Item | Specification | Unit |
|---|---|---|
| LED Circuit | 3 chip White LED, in Parallel | — |
| Drive Condition | IF = 60mA, Vf = 6V (Typ) | — |
Backlight Circuit Diagram (from document):
LEDA → [Backlight Circuit] → LEDK
IF = 60mA
VF = 6V (Typ)
3.3 Optical & Electro-Optical Characteristics (Ta=25°C)
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|---|---|
| Response time | Tr + Tf | θx = θy = 0 | — | 25 | 35 | ms | Note 1 |
| Contrast Ratio | CR | θx = θy = 0 | 800 | 1200 | — | — | Note 2 |
| Transmittance | T% | θx = θy = 0 | 3.4 | 4.0 | — | % | |
| Color Chromaticity (CIE1931) White | W x | θx = θy = 0 | — | 0.297 | — | — | |
| Color Chromaticity (CIE1931) White | W y | θx = θy = 0 | — | 0.337 | — | — | |
| Viewing angle | θT | CR > 10 | 80 | 85 | — | Deg. | Note 3 |
| Viewing angle | θB | CR > 10 | 80 | 85 | — | Deg. | Note 3 |
| Viewing angle | θL | CR > 10 | 80 | 85 | — | Deg. | Note 3 |
| Viewing angle | θR | CR > 10 | 80 | 85 | — | Deg. | Note 3 |
Notes (from document):
Note 1: Definition of Response Time
The response time is defined as the following figure and shall be measured by switching the input signal for "black" and "white". This definition is valid for a normally black display. For a normally white display the opposite definition applies.
- Tr (Rise Time): Time from 10% to 90% of optical response.
- Tf (Fall Time): Time from 90% to 10% of optical response.
- Tr + Tf = Total Response Time.
Note 2: Definition of Contrast Ratio
Contrast ratio (CR) is defined mathematically by the following formula:Contrast Ratio = Luminance measured when LCD on the "White" state / Luminance measured when LCD on the "Black" state
Note 3: Definition of Viewing Angle
Viewing angle is the angle at which the contrast ratio is greater than 10. Angles are determined for the horizontal or x axis and the vertical or y axis with respect to the z axis which is normal to the LCD surface.
Note 4: Backlight Circuit
- Circuit diagram: LEDA → [Backlight] → LEDK
- Drive condition: IF = 60mA, Vf = 6V (Typ)
3.4 Version Record
(Not explicitly provided in the extracted document excerpt; refer to Section 9 of the full specification.)
4. Application Guidelines & Critical Notes
Intended Use
- Smartwatches, fitness trackers, and other wearable devices
- IoT display nodes and smart home controls
- Miniature handheld instruments
- Any application requiring a compact, high-resolution square display with excellent IPS viewing angles
Critical Design Considerations
-
Dual Interface Support (RGB 16BIT / MIPI 2L):
- This module supports **two interface supports two interface modes: RGB 16BIT and MIPI 2L.
- RGB 16BIT Mode: Uses 16 data lines (R0-R4, G0-G5, B0-B4) for pixel data, plus VS, HS, DCLK, DE for timing control. SPI pins (CS, SCL, SDA) are used for register configuration.
- MIPI 2L Mode: Uses 2 data lanes (DP0/DN0, D1P/D1N) and 1 clock lane (CKP/CKN) for high-speed serial data transmission.
- The host MCU must support the selected interface mode.
-
Power Supply:
- Provide stable VCC (2.65V to 3.3V, 2.8V typical) for the main logic (connected to Pin 4).
- Provide stable IOVCC (1.65V to 3.3V, 1.8V typical) for the I/O interface (connected to Pins 38, 40).
- The backlight requires a constant-current LED driver connected to ** connected to LEDA (Anode, Pin 2) and LEDK (Cathode, Pin 1), set to 60 mA at approximately 6V (Typ).
-
Interface Selection:
- The module supports both RGB 16BIT and MIPI 2L interfaces. The pin assignments differ between the two modes.
- For RGB 16BIT mode: Use the pinout from the "RGB 16BIT" table.
- For MIPI 2L mode: Use the pinout from the "MIPI 2L" table.
- Ensure the correct interface mode is selected and configured in the system design.
-
Mechanical Integration:
- Module Outline: 48.08mm (H) × 49.95mm (V) × 1.96mm (D).
- Active Area: 45.684mm × 45.684mm – a perfectly square display.
- FPC: The module uses a 40-pin FPC with 0.5mm pitch (40 pins × 0.5mm = 20.00mm total width).
- FPC Bend: The FPC has a designated bend area — follow the intended bend direction for installation.
-
Viewing Angle Characteristics:
This is an IPS panel with excellent viewing angle performance (CR > 10):- Top (12 o'clock): 85° (Typ)
- Bottom (6 o'clock): 85° (Typ)
- Left (9 o'clock): 85° (Typ)
- Right (3 o'clock): 85° (Typ)
The module provides near-perfect viewing angles in all directions, making it ideal for wearable devices.
-
Optical Performance:
- Response Time: 25ms (Typ), 35ms (Max) – fast enough for most GUI applications.
- Contrast Ratio: 800 (Min), 1200 (Typ) – excellent contrast performance for an IPS panel.
- Transmittance: 3.4% (Min), 4.0% (Typ).
- White Chromaticity (CIE1931): Wx = 0.297, Wy = 0.337 (Typical).
- Module Luminance (WITHOUT CTP): 300 cd/m² (typ).
-
Temperature Limits:
- Operating Temperature: -20°C to +60°C.
- Storage Temperature: -30°C to +70°C.
Handling & Compliance
- The module is ROHS compliant.
- Observe standard ESD precautions during handling and assembly.
- The module contains fragile glass and a 40-pin FPC – handle with care.
- Avoid bending the FPC sharply, especially near the connector interface.
- The module includes a high-temperature insulation tape (高温绝缘胶带) for handling during assembly.
5. Conclusion & Design-In Support
The LS020I07-MR-V1 specification details a high-performance 2.0-inch square IPS display module with dual RGB 16BIT / MIPI 2L interface and 40-pin connector — an excellent choice for wearable and compact display applications requiring high resolution, excellent image quality, and interface flexibility.
Key Strengths:
-
Dual Interface Support: The module supports both RGB 16BIT and MIPI 2L interfaces, providing flexibility for different system architectures.
-
High-Resolution Square Display: The 320×380 resolution in a 2.0-inch square format is ideal for round or circular watch faces (with a circular mask) or symmetrical UI designs.
-
Excellent IPS Technology: 85° viewing angles in all directions ensure consistent image quality from any perspective — essential for wearable devices.
-
Excellent Contrast Ratio: 1200:1 (Typ) provides outstanding image quality for an IPS panel.
-
Fast Response Time: 25ms (Typ) – suitable for most GUI applications.
-
High Brightness: 300 cd/m² (typ) ensures good readability in indoor and outdoor conditions.
-
Standard 40-pin FPC: The 0.5mm pitch 40-pin FPC provides a robust connection interface.
Main Design Focus:
- The critical design task is selecting and properly implementing the correct interface mode (RGB 16BIT or MIPI 2L) based on the host system's capabilities.
- Supporting requirements:
- Provide stable VCC (2.8V typical) and IOVCC (1.8V typical) power.
- Provide a constant-current backlight driver set to 60 mA at 6V (Typ).
- Mechanical integration — the module outline is 48.08mm × 49.95mm × 1.96mm.
- FPC connector — verify the 40-pin FPC with 0.5mm pitch.
- Interface selection — ensure the correct pinout is used based on the selected interface mode.
This module is an excellent choice for high-end wearable devices, smartwatches, and any compact IoT application requiring a high-resolution square IPS display with flexible interface options.
