LSC0185I02-QS-V1 (GC9B71): 1.82-inch TFT LCD Module, 320×386, QSPI Interface, 16.7M Colors, Transmissive
Product Subtitle / Keywords
1.82 Inch Display, 320(H)×386(V) Resolution, Color Active Matrix a-Si TFT LCD Q-Panel, COG+FPC+B/L+CTP Module Type, QSPI Interface (4-Line), 16.7M Colors, Main LCD Driver: GC9B71, Module Type: COG+FPC+B/L+CTP, Operating Temp: -20°C ~ 70°C, Storage Temp: -30°C ~ 80°C, Backlight: LED, Vf=2.9~3.1V, If=60mA, RoHS Compliant
1. Executive Summary And Product Positioning
The LSC0185I02-QS-V1 is a 1.82-inch diagonal color active matrix a-Si TFT LCD Q-Panel, manufactured by Lesson (Wanan) Smart Display Technology Co., Ltd. This innovative display module utilizes amorphous silicon (a-Si) TFTs as active switching devices, providing a high-performance visual output solution in a compact form factor. The product specification (Revision 1.0) serves as the definitive technical document for this module.
This module is composed of a TFT-LCD panel, a driver circuit, a backlight unit (B/L), and includes a capacitive touch panel (CTP), making it a complete, integrated Human-Machine Interface (HMI) component. It features a unique resolution of 320×386 pixels and is capable of displaying up to 16.7 million colors, enabling vibrant and highly detailed imagery.
The unequivocal recommendation for engineers is to strictly adhere to the absolute maximum ratings, electrical specifications, and interface timing described herein to ensure reliable performance and compatibility within the intended application. Failure to operate within these limits can lead to permanent damage, degraded optical performance, or reduced product lifespan.
2. Detailed Product Overview And Architecture
The LSC0185I02-QS-V1 is engineered for devices that demand a sharp, colorful display with user touch input in a small footprint. Its architecture is built around several key technologies and design choices:
- Core Technology: Color active matrix a-Si LCD Q-Panel, using a-Si (amorphous silicon) TFTs (Thin Film Transistors) as an active switching devices. This widely adopted technology uses a thin layer of amorphous silicon to create transistors that actively control each pixel. The Q-Panel technology focuses on delivering high-quality image performance with precise color and contrast control.
- Module Type: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight) + CTP (Capacitive Touch Panel). This construction is a hallmark of modern, compact displays where space is at a premium. The driver IC is directly mounted onto the LCD glass (COG), minimizing interconnect complexity and module size. The FPC provides a flexible connection to the host system. The B/L is essential for making the transmissive LCD visible. The inclusion of a CTP provides native touch input capability, eliminating the need for separate touch sensor integration.
- Display Format: Graphic 320 × 386 pixel array. Unlike standard 4:3 or 16:9 resolutions, this specific 320×386 resolution is a unique aspect ratio, suggesting it is designed for a specific application that benefits from a slightly taller portrait-oriented display. Each pixel is divided into BLUE, GREEN, RED dots which are arranged in vertical stripe, providing full color mixing for each pixel.
- Display Characteristics: Capable of displaying up to 16.7 million colors. This corresponds to an 8-bit color depth per primary color (Red, Green, Blue), allowing the module to generate 16,777,216 distinct colors. This provides for the most realistic and smooth color gradients, typical for high-end consumer displays.
- Interface Type: The module utilizes a QSPI (Quad SPI) Interface. This is a high-speed serial interface that uses 4 data lines (in addition to a clock and chip select) to transfer data simultaneously, achieving significantly higher throughput than a standard SPI interface. This is necessary to drive the 16.7 million colors at a reasonable frame rate.
- Main LCD Driver IC: The module integrates the GC9B71 driver IC. This specific IC is designed to drive the TFT matrix and handle the QSPI interface commands for configuring the display, such as setting the display window, brightness, and sleep modes.
- Backlight Unit: The module utilizes a white LED backlight. The specified electrical characteristics are Vf=2.9~3.1V and If=60mA. Engineers must provide a suitable current-limited power source for this backlight.
- Special Features: High 16.7M color capability, unique 320×386 resolution, high-speed QSPI interface, integrated capacitive touch panel (CTP), compact size, and compliant with the RoHS directive.
- Approval Status: Approved Product Specification only (Revision 1.0).
3. Exhaustive Technical Specifications
3.1 Mechanical & General Specification
This section provides the physical dimensions and other key general parameters of the module. The module is designed to be compact and lightweight, making it suitable for portable or space-constrained devices. The exact outline dimensions, including the active area, are critical for mechanical design integration. The thickness of the various layers (Glass, FPC, TP) are specified to allow for enclosure design.
| Parameter | Specification | Unit |
|---|---|---|
| Panel Size | 1.82'' (Diagonal) | Inch |
| Resolution | 320 (H) x 386 (V) | pixels |
| Display Type | Color Active Matrix a-Si LCD Q-Panel | - |
| Display Colors | 16.7M | colors |
| Module Type | COG+FPC+B/L+CTP | - |
| Main LCD Driver IC | GC9B71 | - |
| Display Mode | Transmissive | - |
| Pixel Arrangement | Vertical Stripe (RGB) | - |
3.2 Absolute Maximum Ratings
The absolute maximum ratings are stress limits. Operating the module at or beyond these values can result in irreversible damage. Functional operation should always be within the recommended operating conditions.
| Item | Symbol | Min | Max | Unit | Remark |
|---|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | 4.6 | V | Note1 Note2 |
| Supply voltage | IOVCC | -0.3 | 4.6 | V | Note1 Note2 |
| Operating temperature | TOPR | -20 | 70 | °C | Note1 Note2 |
| Storage temperature | TSTR | -30 | 80 | °C | Note1 Note2 |
Note1: These values are absolute maximum ratings. Exceeding these values may cause permanent damage to the device.
Note2: All voltages are referenced to GND.
3.3 Recommended Electrical Characteristics
These are the recommended operating conditions for the module. The module has two main power supply inputs: VCC for the core logic and panel driver, and IOVCC for the I/O interface level. This split rail design allows for flexible integration with host microcontrollers that may operate at different voltage levels.
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply voltage | VCC | 2.5 | 2.8 | 3.3 | V |
| Supply voltage (I/O) | IOVCC | 1.65 | 2.8 | 3.3 | V |
| Input Voltage (L level) | VIL | 0 | - | 0.3*IOVCC | V |
| Input Voltage (H level) | VIH | 0.7*IOVCC | - | IOVCC | V |
3.4 Electro-Optical Characteristics
The electro-optical characteristics define the visual performance of the module. These values are typically measured under specific laboratory conditions (Ta=25°C, in a dark room) and may vary slightly in real-world applications. The module offers excellent contrast and wide viewing angles.
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Response time | Tr + Tf | θx = θy =0 | - | 30 | 35 | ms |
| Contrast Ratio | CR | θx = θy =0 | 1000 | 1200 | - | - |
| Transmittance | T% | θx = θy =0 | 3.15 | 3.7 | - | % |
| Color Chromaticity (White) | W x | θx = θy =0 | - | 0.292 | - | - |
| Color Chromaticity (White) | W y | θx = θy =0 | - | 0.333 | - | - |
| Viewing angle (all directions) | θT, θB, θL, θR | CR > 10 | 80 | 85 | - | Deg. |
3.5 Interface Connection (24-Pin QSPI Interface)
The module uses a 24-pin FPC connector with a QSPI interface. The pinout is critical for correct integration. The interface includes power, ground, dedicated QSPI data lines (SD0-SD3), clock (LCD_CLK), chip select (LCD_CS), reset (LCD_RST), a tearing effect output (LCD_TE), and separate pins for the capacitive touch panel (CTP) via an I2C interface.
| PIN NO. | Symbol | Description |
|---|---|---|
| 1 | SD0 | QSPI interface data bus (bit 0) |
| 2 | LEDK | Power for LED backlight cathode |
| 3 | SD1 | QSPI interface data bus (bit 1) |
| 4 | LCD_TE | Tearing effect output pin to synchronize MPU to frame writing |
| 5 | SD2 | QSPI interface data bus (bit 2) |
| 6 | GND | Ground |
| 7 | SD3 | QSPI interface data bus (bit 3) |
| 8 | GND | Ground |
| 9 | LCD_CLK | Clock in SPI interface (SCL) |
| 10 | LEDA | Power for LED backlight anode |
| 11 | LCD_CS | Chip select pin |
| 12 | LEDA | Power for LED backlight anode |
| 13 | LCD_RST | This signal will reset the device and it must be applied to properly initialize the chip |
| 14 | VDD3.3V | Power supply (3.3V) |
| 15 | CTP_RST | Reset Pin for TP |
| 16 | VDD3.3V | Power supply (3.3V) |
| 17 | CTP_INT | Interrupt signal for TP |
| 18 | GND | Ground |
| 19 | CTP_SDA | SDA pin for TP (I2C Data) |
| 20 | GND | Ground |
| 21 | CTP_SCL | SCL pin for TP (I2C Clock) |
| 22 | CTP_VDD | Power supply for TP |
| 23 | GND | Ground |
| 24 | GND | Ground |
4. Application Scenario
The LSC0185I02-QS-V1 is a high-performance, feature-rich display module with an integrated touch panel, making it an exceptional choice for any embedded system that requires a vibrant visual output and responsive user input in a compact, integrated package. Its unique 1.82-inch diagonal size with a 320×386 resolution provides a sharp and detailed image for rich graphical content, text, and icons. The 16.7 million color capability allows for the most realistic and visually appealing user interface.
Key application areas are numerous and diverse:
- Smart Wearables: Smartwatches and advanced fitness bands are primary targets. The compact size, high resolution, and integrated touch allow for a modern, interactive user experience. The high color depth is ideal for displaying photos, maps, and complex watch faces.
- Handheld Instruments: High-end multimeters, oscilloscopes, and other portable test equipment benefit from a clear, readable display with touch control for mode selection, measurement viewing, and data logging.
- Human-Machine Interfaces (HMI): Advanced industrial controllers, smart home hubs, and IoT device control panels can use this module for a localized, intuitive, and visually rich interface.
- Medical Devices: Portable diagnostic tools, medical monitoring devices, and drug delivery systems can utilize this display for data presentation and touch-based navigation.
- Consumer Electronics: High-end remote controls, smart appliances, and point-of-sale (POS) terminals benefit from the all-in-one display and touch solution.
The module's high-speed QSPI interface is essential for driving its 16.7M color capability at a smooth frame rate. The integrated CTP eliminates the need for a separate touch controller, simplifying the bill of materials and system integration. Designers must ensure their application's operating environment stays within the -20°C to 70°C range to guarantee optimal performance and reliability.
5. Handling Precautions And Compliance
The LCD panel is made of glass and is fragile. The polarizer surface is easily scratched. The module should be handled with care to avoid applying pressure on the display area, especially the back of the LCD. ESD (Electrostatic Discharge) protection is mandatory throughout handling, assembly, and testing. Use grounded wrist straps, conductive work surfaces, and anti-static packaging. The FPC is also delicate; avoid sharp bends at the connector interface.
The module should be stored in a clean, dry environment away from direct sunlight, high temperatures, and corrosive gases. The recommended storage temperature is -30°C to 80°C. It is strongly recommended to use the module within six months of manufacturing, and after one year of storage, the electrical and optical characteristics should be re-validated.
It is strongly recommended to read the full specification document (LSC0185I02-QS-V1 Product Specification Revision 1.0) before integration and to test the module under application-specific conditions. The manufacturer disclaims liability for damages resulting from improper use, modification, or failure to follow these guidelines.
The product is compliant with the RoHS (Restriction of Hazardous Substances) directive. Proper waste disposal according to local regulations is recommended at the end of the product's lifecycle.
