LS101I23-L-V1: 10.1-Inch TFT LCD Module, WXGA Resolution (1280×800), 16.7M Colors, LVDS Interface, Optimum Viewing Direction 6 O'Clock
Product Subtitle / Keywords
10.1 Inch Display, 1280(RGB)×800 WXGA Resolution, Color Active Matrix TFT LCD, Amorphous Silicon TFT, COG+FPC+B/L Module Type, 16.7M Colors, LVDS Interface, Typical Power Consumption 0.6W, Backlight If=260mA, Vf=9-9.6V, Operating Temp -20°C~+70°C, Storage Temp -30°C~+80°C, Lesson Smart Display Technology Co., Ltd
1. Executive Summary & Product Positioning
The LS101I23-L-V1, developed by Lesson Smart Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 10.1-inch color active matrix TFT LCD FOB (Flexible On Board) module using amorphous silicon TFT's (Thin Film Transistors) as active switching devices.
This product specification (Revision 1.0) serves as the definitive technical document, defining its general description (including a 10.1 inch diagonal, WXGA resolution of 1280 horizontal by 800 vertical pixel array, and 16.7M colors), physical features, mechanical specifications, outline dimensions, electrical characteristics (including power supply, current, and power consumption), module function description (including block diagram and pin description), and electro-optical characteristics.
The document provides the core parameters necessary for system integration into standard 10.1-inch industrial, commercial, and embedded display applications. The unequivocal recommendation for engineers is to strictly adhere to the electrical specifications (especially the power supply voltage and backlight driving conditions), the pin assignment, and the mechanical tolerances described herein to ensure reliable performance and compatibility.
2. Detailed Product Overview & Architecture
- Core Technology: Color active matrix TFT LCD FOB (Flexible On Board) module using amorphous silicon TFT's (Thin Film Transistors) as active switching devices.
- Display Resolution: WXGA: 1280 horizontal × 800 vertical pixel array.
- Pixel Structure: Each pixel is divided into RED, GREEN, BLUE dots which are arranged in vertical stripe. This module can display 16.7M colors.
- Module Construction: COG+FPC+B/L (Chip-On-Glass + Flexible Printed Circuit + Backlight).
- Optimum Viewing Direction: 6 O'Clock.
- Backlight: White LED backlight, with a typical current of 260mA and a forward voltage of 9-9.6V.
- Interface: LVDS (Low-Voltage Differential Signaling) interface, as indicated by pin names like RXIN0, RXIN1, RXCLKIN, etc.
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Parameter | Specification | Unit |
|---|---|---|
| Module Model | LS101I23-L-V1 | - |
| LCD Size (Diagonal) | 10.1 | inch |
| Number of Dots | 1280(RGB) × 800 (WXGA) | Pixels |
| Active Area (H×V) | 219.96 × 135.6 | mm |
| Module Size (H×V×D) | 249.8 × 157.0 × 4.65 | mm |
| Display Colors | 16.7M | - |
| Module Type | COG+FPC+B/L | - |
| Optimum Viewing Direction | 6 O'Clock | - |
| Backlight Type | White LED | - |
| Operating Temperature | -20 ~ +70 | °C |
| Storage Temperature | -30 ~ +80 | °C |
| Supplier | 立信(万安)智显科技有限公司 (Lesson Smart Display Technology Co.,Ltd) | - |
| Document Revision | Revision 1.0 | - |
3.2 Electrical Characteristics
3.2.1 DC Electrical Characteristics
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
|---|---|---|---|---|---|---|
| Power Supply Voltage | VDD | 3.0 | 3.3 | 3.6 | V | - |
| Power Supply Voltage (Ripple) | VRP | - | - | 300 | mV | Ripple |
| Power Supply Current | IDD | - | 182 | 243 | mA | Note 1 |
| Power Consumption | PLCD | - | 0.6 | 0.8 | W | Note 1 |
| Rush Current | IRUSH | - | - | 3.0 | A | Note 2 |
| CMOS Interface Input High Voltage | VIH | 2.7 | - | 3.3 | V | - |
| CMOS Interface Input Low Voltage | VIL | 0 | - | 0.5 | V | - |
| CMOS Interface Output High Voltage | VOH | 2.7 | - | 3.3 | V | - |
| CMOS Interface Output Low Voltage | VOL | 0 | - | 0.5 | V | - |
Notes:
- The supply voltage is measured at the interface connector of LCM. The current draw and power consumption specified is for VDD=3.3V, Frame rate fv=60Hz and Clock frequency = 72.4MHz. Test Pattern: Typ: Mosaic 8 x 6 Pattern (L0/L255), Max: skip subPixel (L255).
- The duration of rush current is about 2ms and rising time of Power Input is 1ms(min).
3.2.2 Backlight Circuit
| Parameter | Specification | Unit |
|---|---|---|
| LED Current (If) | 260 | mA |
| LED Voltage (Vf) | 9 ~ 9.6 | V |
3.3 Module Function Description
3.3.1 Block Diagram
The block diagram of the LCM shows the following architecture:
- Input: LCD Signal and LCD Power from the system are connected to the Input Connector.
- Power: The Input Connector feeds power to a DC/DC Converter.
- Data: The Input Connector also routes data signals to the Output Pin.
- Driver IC: The DC/DC Converter and the Output Pin both connect to the Drive IC (IC×2, indicating two driver ICs).
- Backlight: LED Anode and LED Cathode are connected to the Output Pin.
3.3.2 Pin Description (Connector: MSAK24025P40G or equivalent)
The module uses a 40-pin connector. The table below shows the key pin assignments for the interface:
| Pin No. | Symbol | I/O | Function |
|---|---|---|---|
| 1, 2 | VDD | P | Power Supply (3.3V typical) |
| 3, 4 | VDD | P | Power Supply (3.3V typical) |
| 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 | Various | I/O/P | Refer to the full specification document for the complete 40-pin definition. The spec image shows signals like RXIN0-+, RXIN1-+, RXCLKIN-+, RXIN2-+, RXIN3-+, GND, STBYB, RESET, LED+, LED-, etc. |
Note: The specification document contains a detailed pin assignment table. The key signals include LVDS data pairs (RXIN0 to RXIN3), LVDS clock pair (RXCLKIN), power supply (VDD), ground (GND), control signals (STBYB, RESET), and backlight power (LED+, LED-).
3.4 Electro-Optical Characteristics
The specification defines the measurement conditions for electro-optical characteristics:
- Measurements are performed in a dark room (ambient luminance ≤ 1lux and temperature = 25±2°C).
- Equipment: Luminance meter system (Goniometer system and TOPCON CS2000/CA310).
- Test unit is located at an approximate distance of 50cm from the LCD surface at a viewing angle of θ and Φ equal to 0°.
- Viewing angle directions are defined as θØ=0° (3 o'clock, "right"), θØ=90° (12 o'clock, "upward"), θØ=180° (9 o'clock, "left"), and θØ=270° (6 o'clock, "bottom").
- Optimum viewing angle direction is 6 O'Clock.
- VDD shall be 3.3 ± 0.3V at 25°C.
4. Application Guidelines & Critical Notes
Intended Use
- Standard 10.1-inch industrial, commercial, and embedded display applications.
- Applications requiring a WXGA (1280×800) resolution display with a standard LVDS interface.
- Systems requiring a 6 O'Clock optimum viewing direction.
Critical Design Considerations
- Power Supply (VDD): The module requires a stable 3.3V power supply (VDD) with a typical current of 182mA (max 243mA). The ripple voltage must be less than 300mV. The rush current can be up to 3.0A for about 2ms.
- Backlight Driving: The backlight requires a constant current source of 260mA with a forward voltage ranging from 9V to 9.6V. A dedicated constant current LED driver is essential for proper operation and lifetime.
- LVDS Interface: The module uses an LVDS interface. The host processor must have a compatible LVDS transmitter output. The pin assignment in the specification must be precisely followed for correct signal routing.
- Optimum Viewing Direction (6 O'Clock): The module's electro-optical performance is optimized for the 6 O'Clock direction (bottom). This is important for applications where the display is viewed from below or at a specific angle.
- Power Consumption: Typical power consumption for the LCD panel (excluding backlight) is 0.6W (max 0.8W). The total system power must account for both the LCD panel and the backlight driver.
- Operating Temperature Range: The module supports a wide industrial temperature range: -20°C to +70°C (operating) and -30°C to +80°C (storage).
- Rush Current: The power supply must be able to handle the inrush current of up to 3.0A for approximately 2ms during power-up.
Handling & Compliance
- Observe standard ESD precautions during handling and assembly.
- The module contains fragile glass and a precision FPC – handle with care to avoid damage.
- Avoid bending the FPC sharply, especially near the connector interface.
- Do not attempt to disassemble or process the LCD Module.
- All NC (No Connection) pins should be left open to avoid interference.
5. Conclusion & Design-In Support
The LS101I23-L-V1 specification details a standard 10.1-inch WXGA (1280×800) TFT LCD module with an LVDS interface, 16.7M colors, a 6 O'Clock optimum viewing direction, and a wide operating temperature range — a solid choice for a wide variety of industrial and commercial display applications.
Key Strengths
- Standard LVDS Interface: Easy to integrate with most embedded processors and FPGAs.
- WXGA Resolution (1280×800): A standard 16:10 aspect ratio, ideal for productivity and media applications.
- Wide Operating Temperature: Suitable for industrial environments (-20°C to +70°C).
- Clear Electrical Specifications: Well-defined power supply, current, and rush current characteristics.
- Optimum 6 O'Clock Viewing Direction: Optimized for viewing from below, suitable for many mounting orientations.
Main Design Focus
- The critical design task is correctly configuring the host's LVDS transmitter for the 1280×800 resolution and providing a stable 3.3V power supply.
- Supporting requirements: Design a constant current backlight driver rated for 260mA at 9V-9.6V. Ensure the power supply can handle the inrush current up to 3.0A. Follow the pin assignment in the spec for the FPC connector.
This module is an excellent choice for engineers looking for a reliable, standard 10.1-inch WXGA display with a robust LVDS interface and proven performance characteristics.
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