LS070T16-R-V1: 7.0-Inch Backlight Module, 800×480 Resolution, 50-Pin, LED Backlight 27 Chips, Transmissive
Product Subtitle / Keywords
7.0 Inch Backlight Module, 800(RGB)×480 Resolution, Transmissive Type, 50-Pin Connector, COG+FPC+B/L, Viewing Direction: 6 O'Clock, LCM Outline: 164.9(W) × 100(H) × 3.3(D) mm (approx.), Active Area (LCM): 154.08(W) × 85.92(H) mm, Bezel Opening: 156.7(W) × 87.1(H) mm, LED Backlight 27 Chips (White LED), IF=180mA (Typ) / VF=9.9V (Typ), VCOM: 3.3V, DEVDD: 3.3V, VGH: 16V (Typ, from backlight spec), VGL: -7V (Typ, from backlight spec), AVDD: 9.6V (Typ, from backlight spec), Operating Temp: -20°C to +70°C, Storage Temp: -30°C to +80°C, DCLK Frequency: 29.2 MHz (Typ, Dual gate), Lesson Smart Display Technology Co., Ltd
1. Executive Summary & Product Positioning
The LS070T16-R-V1, developed by Lesson Smart Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 7.0-inch backlight module (LCD Module) featuring a transmissive type a-Si TFT-LCD.
This product specification (Revision 1.0, dated 2025-12-23) serves as the definitive technical document, defining its general description (including 800(RGB)*480 resolution), main component composition (including 27 LED chips), optical characteristics, electrical characteristics, reliability test conditions, and other quality requirements.
The document provides the core parameters necessary for system integration into embedded display applications requiring a standard 7.0-inch display. 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) module, consisting of a TFT-LCD panel, driver circuit and backlight unit.
- Display Type: Transmissive type, 6 O'CLOCK viewing direction.
- Display Format: Graphic 800(RGB) × 480 pixel array (WVGA resolution).
- Module Construction: COG+FPC+B/L (Chip-On-Glass + Flexible Printed Circuit + Backlight).
- Pin Count: 50-pin connector (Hirose FH12A-50S-0.5SH or equivalent).
- Backlight: White LED 27 chips (parallel), IF = 180mA, VF = 9.9V (Typ).
- Key Components: One integral backlight with High brightness 27-lamps white LED.
- Display Colors: 16.7M (Inferred from 24-bit RGB interface).
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Module Model | LS070T16-R-V1 |
| LCD Size (Diagonal) | 7.0 inch |
| Display Type | Transmissive |
| Resolution | 800(RGB) × 480 Dots |
| Viewing Direction | 6 O'CLOCK |
| Module Type | COG+FPC+B/L |
| Backlight | One integral backlight with High brightness 27-lamps White LED |
| PIN Count | 50 |
| Connector Type | Hirose FH12A-50S-0.5SH (Recommended) |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
| Supplier | 立信(万安)智显科技有限公司 (Lesson Smart Dispaly Technology Co.,Ltd) |
| Document Version / Date | Revision 1.0 / 2025-12-23 |
3.2 Electrical & Interface Specifications
3.2.1 Main Component Composition
| No. | Component | Material | Qty |
|---|---|---|---|
| 1 | Top Steel Frame | Galvanized sheet | 1 |
| 2 | Bottom Steel Frame | Galvanized sheet | 1 |
| 3 | Plastic Frame | Black PC | 1 |
| 4 | Light Guide Plate | Clear PMMA | 1 |
| 5 | Reflector | White reflection | 1 |
| 6 | Terminal Wire | UL1501 | 1 |
| 7 | Diffuser | Matte Translucent | 1 |
| 8 | PCB | FR-4 Silk white oil | 1 |
| 9 | LED | White LED | 27 |
| 10 | Prism Sheet | KL66-150T | 2 |
3.2.2 Electrical Specifications (LED Characteristics)
LED Lighting Current: I = 180 mA (Typ, 25°C). Maximum current must not be exceeded to avoid affecting LED life and brightness.
LED Voltage: V = 9.9V (Typ, 25°C), Min: 9.0V, Max: 10.5V.
Lighting Delay Time: ON 30 sec – OFF 30 sec.
3.2.3 Backlight Electrical Specifications
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Backlight Voltage | V | 25°C | 9.0 | 9.9 | 10.5 | Vrms |
| Backlight Current | I | 25°C | - | 180 | - | mArms |
| Lighting Power | W | 25°C | 0.54 | 0.594 | 0.63 | Wrms |
3.2.4 LED Life
Condition: Ambient temperature: 25±2℃.
Life Expectancy: 30,000 hours or more.
End-of-Life Criteria:
- Center brightness less than 50% of initial value under normal lighting conditions.
- Cannot be lit normally.
3.3 Optical Characteristics
Test Conditions: LED current = 180 mA, ambient temperature = 25±2℃, dark room (10Lx or less).
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Uniformity | □I | Imin/Imax | - | - | - | % |
Note 1: Table test points are measured at LED current (180mA), temperature 25±2℃.
Note 2: Test environment: dark room (10Lx or less).
Note 3: Uniformity = (IMIN ÷ IMAX) × 100%.
3.4 Reliability Test
| Test Item | Test Conditions | Criteria |
|---|---|---|
| Operating: High Temp./Humidity | 50℃; 90%RH; 240 hours | (a) (b) (c) (e) (f) |
| Operating: Low Temp. | -20℃; 192 hours | (a) (b) (c) (e) (f) |
| Operating: High Temp. | 20℃ - 70℃; 192 hours | (a) (b) (c) (e) (f) |
| On/Off Action | 30 sec ON / 30 sec OFF; 10000 cycles | (b) (c) (d) (f) |
| Storage: Low Temp. | -30℃; 192 hours | (a) (b) (c) (e) (f) |
| Storage: High Temp. | 80℃; 192 hours | (a) (b) (c) (e) (f) |
| Thermal Shock | 60℃ (1 hr) / -10℃ (1 hr); 50 cycles | (a) (b) (c) (e) (f) |
4. Application Guidelines & Critical Notes
Intended Use
- Applications where thin thickness, wide viewing angle and low power are critical factors and graphic displays are important.
- Industrial control panels and human-machine interfaces (HMIs).
- Embedded systems requiring a standard 7.0-inch backlight module with COG+FPC+B/L construction.
Critical Design Considerations
- Backlight Driving: The backlight uses 27 white LED chips in parallel. A constant-current LED driver is required with an IF = 180 mA and VF = 9.9V (Typ). Maximum current must not be exceeded.
- Optical Test Conditions: Optical specifications are measured at LED current = 180mA and ambient temperature = 25±2℃. Uniformity = (IMIN/IMAX)×100%.
- LED Life: At 25±2℃, LED life is 30,000 hours or more. Life terminates when center brightness drops below 50% of initial value or when the LED cannot be lit normally.
- Temperature Limits: Operating Temperature: -20°C to +70°C. Storage Temperature: -30°C to +80°C.
- Connector: Uses Hirose FH12A-50S-0.5SH (50-pin, 0.5mm pitch). Ensure correct mating connector is used.
- Power Sequence: A proper power sequence should be followed. The backlight should be applied after the logic power is fully stable.
- LED Current Limitation: The LED lighting current must not exceed the maximum specified value (I=180mA), otherwise LED life and brightness will be severely affected.
Handling & Compliance
- The module contains fragile glass and FPC – handle with care.
- Observe standard ESD precautions during handling and assembly.
- Avoid bending the FPC sharply, especially near the connector interface.
- Do not attempt to disassemble or process the LCD Module.
- NC terminals should be open. Do not connect anything.
- If the logic circuit power is off, do not apply the input signals.
5. Conclusion & Design-In Support
The LS070T16-R-V1 specification details a standard 7.0-inch backlight module with 800×480 resolution, 50-pin FPC connector, 27-chip LED backlight, and detailed reliability test conditions — an excellent choice for applications requiring a reliable and standard 7.0-inch backlight module.
Key Strengths
- Standard WVGA Resolution (800×480): Suitable for standard 7.0-inch applications.
- High Brightness 27-chip LED Backlight: IF=180mA for excellent luminance.
- Complete Component Composition: Detailed list of materials used (steel frames, plastic frame, light guide plate, etc.).
- Detailed Reliability Testing: Comprehensive test conditions for temperature, humidity, and thermal shock.
- Clear Optical Test Requirements: Uniformity measurement and test point definition.
- Hirose Connector: Standard compact connector for industrial applications.
- Recent Revision (2025-12-23): Up-to-date product specification.
Main Design Focus
- The critical design task is designing a constant-current LED driver for the 27-chip backlight at IF=180mA and VF=9.9V (Typ), and ensuring the LED current does not exceed the maximum rating.
- Supporting requirements: Provide proper mechanical mounting matching the bezel opening dimensions. Follow the operating temperature range (-20°C to +70°C) and ESD precautions. Use the correct 50-pin Hirose connector (FH12A-50S-0.5SH).
This module is an excellent choice for industrial control panels, HMIs, and any embedded system requiring a standard 7.0-inch backlight module with a 50-pin connector and high-brightness LED backlight.
