LS070I24-L-V1: 7.0-inch TFT LCD Module, 1080×1080, LVDS Interface, 16.7M Colors, Transmissive IPS
Product Subtitle / Keywords
7.0 Inch Display, 1080(RGB)×1080 Resolution, Transmissive a-Si TFT-LCD Module, COG+FPC+B/L Module Type, LVDS Interface (6-bit + 2-bit), 16.7M Colors (8-bit), Main LCD Driver: TBD (Not Specified), IPS Display Mode (ALL View, Normally Black), Module Size: 191.58(W) × 192.75(H) × 5.27(D) mm, Active Area: 177.47(W) × 177.47(H) mm, Pixel Pitch: 0.1644 × 0.1644 mm, Operating Temp: -20°C ~ +70°C, Storage Temp: -30°C ~ +80°C, Backlight: 56 LED Lights (8 Series 7 Parallel), VF=21V (Typ.), IF=240mA, Module Luminance: 800 cd/m² (Typ.), Contrast Ratio: 1200:1 (Typ.), NTSC: 70% (Typ.), Uniformity: 80% (Typ.), Viewing Angle: IPS (ALL, No Visible Flicker), RoHS Compliant, Product Revision 1.0 (Released on 2024-11-06), Product Revision V1 (First release)
1. Executive Summary And Product Positioning
The LS070I24-L-V1 is a 7.0-inch diagonal transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module, manufactured by Lesson (Wanan) Smart Display Technology Co., Ltd. This comprehensive module is a complete, ready-to-use visual interface solution, integrating a TFT-LCD panel, a driving circuit, and a backlight unit (B/L) into a robust and compact package. The product specification (Revision 1.0, dated 2024-11-06) serves as the definitive technical document for this module.
This module is characterized by its high-brightness and square format display. It features a unique 1080×1080 pixel resolution and is capable of displaying up to 16.7M colors, which corresponds to 24-bit color depth (8-bit per primary color Red, Green, Blue). This ensures smooth color gradients and detailed imagery. The module boasts a high typical brightness of 800 cd/m² and a high contrast ratio of 1200:1, making it suitable for a wide range of environments, including those with high ambient light. The module uses a standard LVDS interface.
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. The mechanical drawing provides detailed specifications for integration, including warpage tolerance and critical dimensions.
2. Detailed Product Overview And Architecture
The LS070I24-L-V1 is engineered for devices that demand a bright, crisp display in a unique square format, such as special-purpose monitors, industrial HMIs, and digital signage. Its architecture is built around several key technologies and design choices:
- Core Technology: Transmissive type a-Si TFT-LCD with IPS (In-Plane Switching) display mode. The display mode is Normally Black. This technology offers superior color reproduction and wide viewing angles (specified as "ALL" direction, with a viewing cone of 80° for all directions). As a transmissive display, it requires a backlight to be visible.
- Module Type: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight). The driver IC is directly mounted onto the LCD glass (COG), minimizing size and interconnect complexity. The FPC provides a flexible connection to the host system. The module outline dimensions are 191.58(W) × 192.75(H) × 5.27(D) mm.
- Display Format: Graphic 1080(RGB)×1080 Dot-matrix. This is a square resolution, offering a 1:1 aspect ratio. The active area is also a perfect square at 177.47(W) × 177.47(H) mm. The pixel pitch is 0.1644 × 0.1644 mm. The RGB stripe arrangement provides full color mixing for each pixel. The driver IC is TBD (To Be Determined).
- Display Characteristics: Capable of displaying up to 16.7M colors. This refers to 8-bit color depth per primary color (R, G, B), allowing the module to generate 16,777,216 distinct colors. The module offers a typical contrast ratio of 1200:1, a typical brightness of 800 cd/m², and a color gamut of 70% NTSC (Typ.).
- Interface Type: The module utilizes a standard LVDS (Low-Voltage Differential Signaling) interface for high-speed data transfer. The pinout includes differential data pairs (RX0- to RX5+ for data channels 0 to 5) and a clock pair (RXCLK+/-). The interface supports a 6-bit + 2-bit color configuration for 16.7M color support.
- Main LCD Driver IC: The module's driver IC is marked as TBD (To Be Determined) in the specification. The specific driver IC model is not specified in the provided document.
- Backlight Unit: The module utilizes a white LED backlight comprised of 56 white LED lights configured as 8 series and 7 parallel (8并7串). The specified driving condition is IF=240mA and VF (Typ.)=21V. The LED lifetime (brightness decreasing to 50% of original) is expected to be 50,000 hours at I_F=240mA.
- Special Features: High resolution 16.7M color capability (8-bit), IPS technology for wide viewing angles (ALL), high brightness (800 cd/m²), high contrast ratio (1200:1), unique square resolution (1080×1080), LVDS interface for standard integration, large active area (7.0 inch), mechanical alignment markings, and compliant with the RoHS directive. The backlight requires LED+ (Anode) and LED- (Cathode) connections. The module includes a specific pin for STBY (Standby) and a SET (Setting/Test) pin. The mechanical drawing specifies a planar warpage of ≤0.35mm. Specific recommendations for TP (Touch Panel) windows are also provided on the mechanical drawing: the TP V.A. opening should be 0.4mm larger than the LCD A.A. on each side.
- Mechanical Integration Recommendations: The specification provides several key recommendations from the mechanical drawing: 1) The TP V.A. (Touch Panel Viewing Area) opening should be 0.4mm larger than the LCD Active Area (A.A.) on each side. 2) The module's LCD cutting edge chipping should be ≤1/3 of the single LCD glass thickness. 3) The planar warpage should be ≤0.35mm. 4) The foam opening should be 0.3mm larger than the LCD A.A. on each side. 5) The drawing also shows a specific "包胶" (glue wrapping) area near the FPC.
- Approval Status: Approved Product Specification only (Revision 1.0, first release).
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specification
This section provides the physical dimensions and other key general parameters of the module. The module is a square format with a large active area.
| Parameter | Specification | Unit | Remark |
|---|---|---|---|
| Panel Size | 7.0'' (Diagonal) | Inch | - |
| Panel Type | IPS | - | - |
| Module Size (W×H×D) | 191.58(H) × 192.75(V) × 5.27(D) | mm | Note 1 |
| Active Area (W×H) | 177.47 × 177.47 | mm | Note 1 |
| Number of Dots | 1080 × RGB × 1080 | pixels | - |
| Display Type | Active matrix a-Si TFT, Transmissive, Normally Black, IPS | - | - |
| Display Colors | 16.7M (8-bit) | colors | - |
| Module Type | COG+FPC+B/L | - | - |
| Main LCD Driver IC | TBD (To Be Determined) | - | - |
| Display Mode | Transmissive, Normally Black, IPS | - | - |
| View Direction (Best Image) | ALL (IPS Wide View) | - | Note 1 |
| Interface | LVDS | - | - |
| Backlight Type | 56 White LED Lights (8S7P) | - | - |
| Pixel Pitch | 0.1644 × 0.1644 | mm | - |
| Pixel Arrangement | RGB-stripe | - | - |
| Planar Warpage | ≤ 0.35 | mm | - |
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.
| Parameter | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Analog Power Supply Voltage | VDD | -0.3 | +4.6 | V |
| Logic Input Voltage Range | VIN | -0.3 | VDDI+0.3 | V |
| Logic Output Voltage Range | VO | -0.3 | VDDI+0.3 | V |
| Operating Temperature | TOPR | -20 | +70 | °C |
| Storage Temperature | TSTG | -30 | +80 | °C |
3.3 Electrical Characteristics
These are the recommended operating conditions for the module.
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | VDD | 3.0 | 3.3 | 3.6 | V |
| NVM Supply Voltage | VPP | 7.4 | 7.5 | 7.6 | V |
| Input High Voltage | VIH | 0.7*VDD | - | VDD | V |
| Input Low Voltage | VIL | DGND | - | 0.3*VDD | V |
| Output High Voltage | VOH | VDD-0.4 | - | VDD | V |
| Output Low Voltage | VOL | DGND | - | DGND+0.4 | V |
3.4 Backlight Driving Conditions
The module uses a white LED backlight comprised of 56 LED chips configured as 8 series and 7 parallel (8S7P). The driving condition is: IF=240mA, VF (Typ.)=21V. A constant current source is strongly recommended for driving the backlight to ensure consistent brightness and longevity. The LED lifetime (brightness decreasing to 50% of original) is 50,000 hours at I_F=240mA.
| Parameter | Symbol | Typ | Unit | Condition |
|---|---|---|---|---|
| Forward Voltage (Total) | VF | 21.0 | V | IF=240mA |
| Forward Current (Total) | IF | 240 | mA | - |
3.5 Interface Connection (LVDS, 30-Pin FPC)
The module uses a 30-pin FPC connector for the LVDS interface. The interface includes power (VDD, GND), LVDS data and clock pairs (RX0- to RX5+, RXCLK+/-), and control signals (STBY, SET). The backlight also uses this connector (LED+, LED-, LED_GND). Note that pins 1, 12, 18, 25, and 26 are assigned as LED+ and LED- as per the mechanical drawing. The pin assignments are as follows:
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 1, 12, 18, 25, 26 | LED+, LED-, GND | P | Backlight Power (LED+ Anode, LED- Cathode, LED_GND Ground) |
| 2 | RX0- | I | Negative LVDS differential data input (Channel 0) |
| 3 | RX0+ | I | Positive LVDS differential data input (Channel 0) |
| 4 | GND | P | Ground |
| 5 | RX1- | I | Negative LVDS differential data input (Channel 1) |
| 6 | RX1+ | I | Positive LVDS differential data input (Channel 1) |
| 7 | GND | P | Ground |
| 8 | RX2- | I | Negative LVDS differential data input (Channel 2) |
| 9 | RX2+ | I | Positive LVDS differential data input (Channel 2) |
| 10 | GND | P | Ground |
| 11 | RXCLK- | I | Negative LVDS differential clock input |
| 13 | RX3- | I | Negative LVDS differential data input (Channel 3) |
| 14 | RX3+ | I | Positive LVDS differential data input (Channel 3) |
| 15 | GND | P | Ground |
| 16 | RX4- | I | Negative LVDS differential data input (Channel 4) |
| 17 | RX4+ | I | Positive LVDS differential data input (Channel 4) |
| 19 | RX5- | I | Negative LVDS differential data input (Channel 5) |
| 20 | RX5+ | I | Positive LVDS differential data input (Channel 5) |
| 21 | GND | P | Ground |
| 22 | NC | - | Not Connected |
| 23 | SET | I | Setting Pin |
| 24 | STBY | I | Standby Control Pin |
| 27, 28, 29, 30 | GND | P | Ground |
3.6 Optical Specifications
The electro-optical characteristics of the module are measured under standard laboratory conditions (Ta=25°C). Key parameters include a luminance of 800 cd/m², a contrast ratio of 1200:1 (Typ.), and a color gamut of 70% NTSC (Typ.). The uniformity is 80% (Typ.). The module is specified to have no visible flicker.
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Uniformity | UL | θ=Φ=0° | - | 80 | - | % |
| Flicker | - | - | No Visible | No Visible | No Visible | - |
| Luminance (Typ.) | Lv | - | - | 800 | - | cd/m² |
| Contrast Ratio (Typ.) | CR | - | - | 1200 | - | - |
| Color Gamut (NTSC) | - | - | - | 70 | - | % |
3.7 Reliability Test Items
The module is subjected to a series of reliability tests to ensure its performance under various environmental conditions. The tests are conducted on sample sizes of 2 pcs per test item.
| Test Item | Test Condition | Test Result Determinant |
|---|---|---|
| High Temperature/Humidity | 60°C ±3°C, 90% ±3% RH, 240H | No bubble, non-display, or glass crack after 2-4 hr recovery. |
| Thermal Shock | -20°C/0.5h ~ +70°C/0.5h, 24 cycles | No bubble, non-display, or glass crack after 2-4 hr recovery. |
4. Application Scenario
The LS070I24-L-V1 is a high-brightness, high-performance display module ideal for any embedded system that requires a vibrant, high-quality display in the unique 7.0-inch square format. Its 1080×1080 resolution provides a crisp and detailed image for rich graphical content and text. The high brightness (800 cd/m²) ensures readability in brightly lit environments. The 16.7M color capability allows for the most realistic and visually appealing user interface possible with an LCD.
Key application areas are numerous and diverse:
- Special-Purpose Monitors: Square-format monitors for industrial control systems, medical imaging, and other applications requiring a unique aspect ratio.
- Industrial HMIs: Control panels for machinery, process controllers, and automation equipment benefit from the high brightness and clear display.
- Digital Signage: Square-format advertising displays, information kiosks, and menu boards in high-ambient-light environments.
- Medical Equipment: Square display panels for patient monitors, diagnostic devices, and surgical control interfaces.
- Instrumentation: Square-panel test equipment, measurement devices, and data loggers requiring a high-resolution display.
The module's LVDS interface is standard for industrial applications, simplifying integration. The IPS technology ensures excellent image consistency when viewed from any angle. The high brightness and contrast ratio make it ideal for applications where readability is critical. The manufacturer's specific mechanical recommendations (TP V.A. opening, foam opening) are critical for successful mechanical design integration.
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 includes a specific gold-plated contact area on the FPC ("镀金面在上").
Important: The module includes a white LED backlight. A constant current source is strongly recommended for driving the backlight to ensure consistent brightness and longevity. The backlight circuit diagram shows the LEDs connected in an 8-series and 7-parallel configuration. The mechanical drawing specifies a specific "包胶" (glue wrapping) area near the FPC, which should be handled with care. The module's planar warpage must be ≤0.35mm.
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 read the full specification document (LS070I24-L-V1 Product Specification Revision 1.0, dated 2024-11-06) 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.
